Better debugging for memory killer middleware

This adds more info to the warning messages output by `MemoryKiller`.

Previously only the PID was showed, making it difficult to debug issues like https://gitlab.com/gitlab-org/gitlab-ce/issues/19124

This adds the worker class and job ID to the log messages.

See merge request !4936
(cherry picked from commit 3659992c)

Remove duplicate new page btn from edit wiki

## What does this MR do?
Removes duplicate button on wiki page

## What are the relevant issue numbers?
Closes #19075

## Screenshots (if relevant)
![Screen_Shot_2016-06-24_at_9.45.28_AM](/uploads/8dca96c3e75b428d63acaaba6dede9a6/Screen_Shot_2016-06-24_at_9.45.28_AM.png)
![Screen_Shot_2016-06-24_at_9.45.57_AM](/uploads/e6ea97b07e48d2fe6f108d8c5a943583/Screen_Shot_2016-06-24_at_9.45.57_AM.png)

See merge request !4904
(cherry picked from commit 121c5c83)

Use clock_gettime for all performance timestamps

This MR adjusts the performance monitoring code to use `Process.clock_gettime` (thus `clock_gettime(3)`) instead of `Time.now`.

Using `Time.now` / `Time.new` adds more overhead than `Process.clock_gettime`, it also doesn't provide a way of getting timestamps in nanoseconds (which `Process.clock_gettime` does allow).

See merge request !4899
(cherry picked from commit 53ad9522)

[ci skip]

Update omniauth-saml to 1.6.0 to address a security vulnerability in ruby-saml

## What does this MR do?

Updates `omniauth-saml` to bring in the new `ruby-saml` dependency that addresses [CVE-2016-5697](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5697)

Fixes #19206

See merge request !4951

Fix visibility of snippets when searching

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/18997

See merge request !1972

Fix an information disclosure when requesting access to a group containing private projects

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19102.

The commit speaks for itself:

    Fix an information disclosure when requesting access to a group containing private projects
    
    The issue was with the `User#groups` and `User#projects` associations
    which goes through the `User#group_members` and `User#project_members`.
    
    Initially I chose to use a secure approach by storing the requester's
    user ID in `Member#created_by_id` instead of `Member#user_id` because I
    was aware that there was a security risk since I didn't know the
    codebase well enough.
    
    Then during the review, we decided to change that and directly store the
    requester's user ID into `Member#user_id` (for the sake of simplifying
    the code I believe), meaning that every `group_members` / `project_members`
    association would include the requesters by default...
    
    My bad for not checking that all the `group_members` / `project_members`
    associations and the ones that go through them (e.g. `Group#users` and
    `Project#users`) were made safe with the `where(requested_at: nil)` /
    `where(members: { requested_at: nil })` scopes.
    
    Now they are all secure.

See merge request !1973

Remove duplicate changelog entry

## What does this MR do?

Removes a changelog entry from 8.9.1, which is only present in 8.10



See merge request !4937

[ci skip]

[ci skip]

Add SMTP as default delivery method to match gitlab-org/omnibus-gitlab!826

Something happened after upgrading to 8.9RC5 that caused mail settings to be set to sendmail by default. gitlab-com/infrastructure#128 describes the issue in more detail. This MR mirrors the change in omnibus with gitlab-org/omnibus-gitlab!826.

Closes #19132

See merge request !4915

Fix a wrong MR status when merge_when_build_succeeds & project.only_allow_merge_if_build_succeeds are true

## What does this MR do?

Fix a wrong MR status when merge_when_build_succeeds & project.only_allow_merge_if_build_succeeds are true.

## Are there points in the code the reviewer needs to double check?

@stanhu I reused your proposal from the issue, I think it's a good enough solution.

## What are the relevant issue numbers?

Fixes #19035.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4912

[ci skip]

Eager load award emoji on notes and participants

See merge request !4628

Fix temp file being deleted after the request while importing a GitLab project

Fixes https://gitlab.com/gitlab-com/infrastructure/issues/151

In production, the temporary uploaded file is getting deleted straight after the request so the Sidekiq worker is unable to find it in `/tmp`

Also, improved erroring/logging of this situation.

See merge request !4894

Remove width restriction for logo on sign-in page.

Follow-up on !4661 since we didn't remove the width restriction on that.

See merge request !4888

Support for rendering/redacting multiple documents

See merge request !4828

Resolve "Scrolling horz on iOS for the secondary nav is broken"

## What does this MR do?
Moves absolutely positioned `div`s outside of the scrolling container because mobile safari causes those elements to jump around on scroll.

## Are there points in the code the reviewer needs to double check?
Check on a real iPhone (was only able to check in iOS simulator)

## Why was this MR needed?
Mobile Safari.

## What are the relevant issue numbers?
Closes #18438

## Screenshots (if relevant)
![mobile-safari-fix](/uploads/b38bba735530eb11507fe03036292dd8/mobile-safari-fix.gif)

See merge request !4869

Apply selected value as label

## What does this MR do?

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

## What are the relevant issue numbers?

## Screenshots (if relevant)
![dropdown-label](/uploads/db2ea7cb3cc51fbdeea53c304f1bd7a5/dropdown-label.gif)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4886

Bump gitlab_git to 10.2.3 to fix false truncated warnings with ISO-8559 files

Closes #18690

See merge request !4884

Restore old behavior around diff notes to outdated discussions

Fixes #18569

See merge request !4870

Fix unwanted label unassignment

## What does this MR do?
- When updating the milestone
  - [x] Do not remove labels when assigning a milestone
  - [x] Do not remove labels when unassigning a milestone
  - [x] Do not remove labels when assigning a milestone and adding another label

- When toggling selected issues labels should be kept
  - [x] Select an issue with an assigned label -> pick another label from dropdown-> unselect the issue -> select the issue again -> submit the form: Existing label should not be removed.

## Are there points in the code the reviewer needs to double check?
Labels should not be added or removed to issues when doing bulk actions unless we explicitly select a label from the dropdown

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4863

[ci skip]

Set button label when picking an option from status dropdown

## What does this MR do?
Fixes an issue with the status dropdown. It was not setting up the correct label after picking an option

## What are the relevant issue numbers?
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/18536

## Screenshots (if relevant)

**Previous**

![status-select-previous](/uploads/7c6adbd6c5ba2660dc39a762d53d3b68/status-select-previous.gif)

**After**

![status-select](/uploads/91483efed8fbd63a79a01c9ca2154b74/status-select.gif)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- [ ] Tests
  - [ ] Added for this feature/bug
  - [x] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4771

Use jQuery objects in ref dropdown

## What does this MR do?

Keeps the behaviour the same as the ref dropdown, however it now uses jQuery objects to handle the HTML creation instead of passing strings around. It pretty much worked out the box so not much was changed in the dropdowns themselves. Will be easy to transfer this over to other dropdown menus as well.

cc. @jschatz1 @rspeicher @DouweM 

Do we want this to go into a patch release?

See merge request !4850

Fix 404 for pipelines

## What does this MR do?
Allow to access pipelines of public project by logged guest.

## What are the relevant issue numbers?
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/17885

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4881

Fix merge requests project settings help link anchor.

## What does this MR do?

8.9.0 added a new project option for merge requests which has a link for help.   The link contained an anchor which was being encoded as ```%23``` so change the help link to properly configure the anchor.

## Are there points in the code the reviewer needs to double check?

None

## Why was this MR needed?

Current release causes 404 error when clicking on the help link in project settings.

## What are the relevant issue numbers?

Closes #18982

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4873

Restrict header logo to 36px so it doesn't overflow.

## What does this MR do?

Fixes the logo in the header.

## Are there points in the code the reviewer needs to double check?

I don't think so.

## Why was this MR needed?

Logos that weren't 36px by 36px were broken in 8.9.0

## What are the relevant issue numbers?

Fixes #18980

## Screenshots (if relevant)

Before:

![Screen_Shot_2016-06-22_at_1.52.54_PM](/uploads/de6e4d9ccf40b972565e3864173a9907/Screen_Shot_2016-06-22_at_1.52.54_PM.png)

After:

![Screen_Shot_2016-06-22_at_1.52.37_PM](/uploads/d72e015263888b5155c1db5e25f54d66/Screen_Shot_2016-06-22_at_1.52.37_PM.png)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

cc: @jschatz1 @dzaporozhets @rspeicher

See merge request !4861

Fix errors found on importing GitLab CE repo

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/18968

See merge request !4855

Added bottom padding to label color suggestion link

## What does this MR do?

Adds a bottom margin to label color suggestions to make sure that when wrapped there is enough whitespace between color rows.

## Are there points in the code the reviewer needs to double check?

😕

## Why was this MR needed?

Mobile UX.

## What are the relevant issue numbers?

Closes #18857.

## Screenshots (if relevant)

![Screen_Shot_2016-06-22_at_00.31.26](/uploads/f49c7fa2b97b13e69f0dea97c5dfb319/Screen_Shot_2016-06-22_at_00.31.26.png)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4845

Hide nav arrows by default

## What does this MR do?
- Fixes the arrow icon flashing on page load
- Removes settings dropdown at higher breakpoint
- Removes unneeded CSS

Closes #18941

## Screenshots (if relevant)
Arrow flashing bug:
![icon](/uploads/3db95626acd0adb37438bdbc2c4aa154/icon.gif)

Settings dropdown breaking nav:
<img src="/uploads/4351035f4cf8cb9fd892b621e6339e50/Screen_Shot_2016-06-21_at_4.25.50_PM.png" width="800px">

@alfredo1 would you mind double checking this to make sure the arrow flashing is definitely not happening?

See merge request !4843

Update Todos documentation and screenshots to include new functionality.

Updates documentation for todos, includes updated and new screenshots.

See also !4502 and #18906

Closes #18923

[ci skip]

See merge request !4840

Handle external issues in IssueReferenceFilter

Handling of external issues was broken when I refactored
`IssueReferenceFilter` to use fewer SQL queries.

Fixes #18827

See merge request !4789

Fix bug in `WikiLinkFilter`.

Closes #18819

- [ ]  #18819 Wiki link filter exception
    - [x]  Make sure [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/6d169d36cabda783116bcb8e2e6f73254566a670/builds) passes
    - [ ]  Wait for merge
    - [ ]  Pick into 8.9

See merge request !4775

Fix subsequent SAML sign ins

Fixes a bug when `auto_link_ldap_user` is `true` that causes SAML users to be unable to sign in a second time.

Fix the problem for https://gitlab.zendesk.com/agent/tickets/22546

See merge request !4718

Fixes header vertical centering.

Fixes header centering.

![ss__2016-05-16_at_5.26.30_PM](/uploads/300b64afc6585023f0e0dbbf721c359a/ss__2016-05-16_at_5.26.30_PM.png)

cc @dzaporozhets

See merge request !4170

Expand on Award Emoji documentation, update/add screenshots.

Adds documentation for award emoji now that comments can be awarded with emojis.

See also !4291 and #18906

Closes #9091

cc: @virtuacreative @axil

See merge request !4839
Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix Network graph links.

## What does this MR do?

Fixes the Network graph links so they no longer link to `/master#{escape_javascript(@commit_url)}`

## Are there points in the code the reviewer needs to double check?

Don't think so.

## Why was this MR needed?

Single quotes don't evaluate Ruby expressions.

## What are the relevant issue numbers?

Fixes #18894.

cc: @jschatz1

See merge request !4832
Signed-off-by: Rémy Coutable <remy@rymai.me>