* master: (261 commits)
  Add link to user profile to commit avatar (!5163)
  Refactor service settings view
  Fix a problem with processing a pipeline where stage only has manual actions
  A CHANGELOG entry
  Don't show other actions of the same name
  Use limit parameter rather than hardcoded value
  Remove icons from explore nav
  Change how we style redirect_to
  Use flash[:notice] only
  Create PipelinesSettingsController for showing settings page
  Fix a few nitpicks
  Allow to disable user request access to groups/projects
  Enable Style/MultilineTernaryOperator rubocop cop
  Fix review comments
  Update routes
  Update CHANGELOG
  Improve implementation of variables
  Log cron_jobs configuration instead of raising exception
  Added checks for migration downtime
  Ensure to_json methods take optional argument
  ...

Add link to profile to commit avatar

## What does this MR do?

- links to user profiles to the avatars on commits page
- tooltips to the avatars on commits page

side effect:

- links to user profiles to the avatars on pipelines page
- tooltips to the avatars on pipelines page
- tooltips to the avatars on activity page
- mailto links to the avatars on activity page for non-registered users

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

Nope.

## Why was this MR needed?

There were no links nor Zeldas.

## What are the relevant issue numbers?

fixes #19644 


See merge request !5163

This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME
subquery'

Oh well.

Added checks for migration downtime

This adds a set of checks that check/list which migrations require downtime (or not). It also comes with a CI task that fails should a migration not be tagged properly.

Fixes #14545

See merge request !4911

Enable Style/MultilineTernaryOperator rubocop cop

Avoid multi-line ?: (the ternary operator). Use if/unless instead.

See #17478

See merge request !4356

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13202462

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13202424

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13202326

Allow slack service to send messages on different channels

closes #8110 

## Allow slack service to send messages on different channels  

![new_slack_service](/uploads/87de0bd6b02a4f7853358676b5e74dff/new_slack_service.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] 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 !5124

Fix two small problems on how we handle manual actions

## What does this MR do?
Fixes two small problems in how we handle manual actions:
- On environments page we show a `Play` for the same action that is lately deployed, we should show other actions only
- When we process a pipeline that have only a manual action in a stage, the pipeline will stop being processed.

- 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 !5366

Resolve "gitlab:setup rake task fails on 8.8.1 source install"

_Originally opened at !4788 by @rickettm._

- - -

## What does this MR do?

Fix bug #15344, so that the limit parameter that is already passed in to the print_users function is actually used, rather than using a hardcoded value.

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

No, it is a trivial change.

## Why was this MR needed?

This bug causes 100 LDAP users to be displayed even when a different limit is given, which can be annoying.

## What are the relevant issue numbers?

Fixes #15344.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [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 !5364

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13200997

Remove icons from explore nav

## What does this MR do?
Removes icons from explore `nav/_explore`

## Why was this MR needed?
To match signed-in nav

## Screenshots (if relevant)
Before:   
![Screen_Shot_2016-07-20_at_6.39.01_AM](/uploads/9ccc11d151e37a0ef2fab681ccc07efa/Screen_Shot_2016-07-20_at_6.39.01_AM.png)

After:   
![Screen_Shot_2016-07-20_at_6.43.15_AM](/uploads/ae058b19cc3c887bccf6c221ac58cfc2/Screen_Shot_2016-07-20_at_6.43.15_AM.png)


See merge request !5362

Signed-off-by: Rémy Coutable <remy@rymai.me>

Apply diff view cookie on compare

## What does this MR do?

Correctly respects the code view changing when comparing 2 refs.

## What are the relevant issue numbers?

Closes #19573 

## Screenshots (if relevant)

![Screen_Shot_2016-07-07_at_12.38.07](/uploads/b6da78cc2bbc2c79dbe8292037176c1a/Screen_Shot_2016-07-07_at_12.38.07.png)

![Screen_Shot_2016-07-07_at_12.38.17](/uploads/977f8b697c65bdb1701db11a39287ac6/Screen_Shot_2016-07-07_at_12.38.17.png)

See merge request !5135

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13198105

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13198953

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5347#note_13199055

Resolve "Move Build badges settings to Builds page (or Builds settings)"

## What does this MR do?
Removes pipeline settings section from project settings & creates a new pipelines settings page    
Adds builds badge to pipelines settings page & removes badge page

## Are there points in the code the reviewer needs to double check?
All Rails updates -> particularly `builds_controller.rb` and `routes`   
Spacing needs to be updated across all settings pages and will be in a separate MR (https://gitlab.com/gitlab-org/gitlab-ce/issues/19827)

## What are the relevant issue numbers?
Closes #15343    
Part of #18920 

## Screenshots (if relevant)
![Screen_Shot_2016-07-19_at_5.47.29_AM](/uploads/48e6d203de4cbe0b697280128695d980/Screen_Shot_2016-07-19_at_5.47.29_AM.png)
![Screen_Shot_2016-07-14_at_9.25.13_AM](/uploads/59118440f3e7bb903f44260abb119376/Screen_Shot_2016-07-14_at_9.25.13_AM.png)

See merge request !5244

So we no longer join anything, just find the latest pipeline
and load builds from there to avoid mixing builds.

Thanks Kamil for the help and tests.

Fix Issue 19641 (new snippets style bug)

## What does this MR do?
Fixes Issue 19641 (new snippets style bug)

## Are there points in the code the reviewer needs to double check?
Shouldn't be

## Why was this MR needed?
Requested in issue 19641 by Fatih Acet https://gitlab.com/gitlab-org/gitlab-ce/issues/19641

## What are the relevant issue numbers?
19641

## Screenshots (if relevant)
![Screenshot_2016-07-09_13.25.39](/uploads/8ead7ea8f4aae7ccaa4d2ddc495b6fe3/Screenshot_2016-07-09_13.25.39.png)
## Does this MR meet the acceptance criteria?
Yes

- [ x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ NA] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ NA] API support added
- Tests
  - [NA ] 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 !5170

Allow to disable user request access to groups/projects

fixes #18585 

![projects](/uploads/9f381e77ffbcd2ecdbabdb8b201b95e4/projects.png)  

![namespaces](/uploads/4b8d39c80576b499118373f0a221882c/namespaces.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [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 !5286

Add predefined CI variables to GitLab

## What does this MR do?
This adds predefined CI variables to GitLab for container registry, pipelines, project name, etc. It also makes sure that all currently documented variables are send from GitLab. This is added to follow up on this proposal: https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/issues/185#note_11844286. To migrate almost all variables out of Runner to GitLab to simplify adding a new of variables without the need for changing the GitLab Runner.

## Why was this MR needed?
Our CI variables miss a lot of crucial information that should be easily accessible. This tries to fill this gap.

## What are the relevant issue numbers?
Fixes https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/issues/185, https://gitlab.com/gitlab-org/gitlab-ce/issues/18164, https://gitlab.com/gitlab-org/gitlab-ce/issues/18075.

## 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 !4826