Don't show "request access" button to project owners

This MR fixes an issue where project owners that are not in the project's members list (I believe this is how we handled project owners before, now we seem to create a "Master" member for the project creator) would see the `Request Access` button.

This MR fixes this issue in a clean way by adding a new `:request_access` ability to replace an ugly helper.

It also give project owners the  ability to update & destroy a requester that would happen to be themselves (since owners could request access to their own project before this MR).

Related to #18790.

See merge request !5091

Add lib/gitlab/emoji.rb instead of gitlab_emoji gem and upgrade Gemojione

- No reason to split it into a separate gem when the gem barely did anything. We can use gemojione directly, making updating gemojione that much easier. Unless there's a particularly good reason we were using the gem?
- Fixes the Rake task since it broke after all the AwardEmoji changes.
- Update gemojione to 2.6.1.

Spring Update changes! http://emojione.com/releases/#2.2.0

See merge request !4919

Document custom Git hook error message

## What does this MR do?

Documents new functionality introduced by https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5073

## Does this MR meet the acceptance criteria?

- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- 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 !5088

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

Updated project header

## What does this MR do?

Updates the project header.

## What are the relevant issue numbers?

Closes #18544, #18832 

## Screenshots (if relevant)

![Screen_Shot_2016-06-29_at_14.16.16](/uploads/4df895e7ecf42e5ddab3f2f1e47f8c7e/Screen_Shot_2016-06-29_at_14.16.16.png)


See merge request !4989

Dumb-down avatar presence check in `avatar_url` methods

`avatar.present?` goes through CarrierWave, and checks that the file
exists on disk and checks its filesize. Because we're hitting the disk,
this adds extra overhead to something where the worst-case scenario is
rendering a broken image.

Instead, we now just check that the _database attribute_ is present,
which is good enough for our purposes.

See https://gitlab.com/gitlab-org/gitlab-ce/issues/19273

See merge request !5093

Fixed avatar alignment in new MR view

## What does this MR do?

Fixes the alignment of the avatar in the new MR compare view

## Screenshots (if relevant)

![Screen_Shot_2016-07-05_at_16.17.54](/uploads/9c427f66f8ef1d5ecee627e57ee61322/Screen_Shot_2016-07-05_at_16.17.54.png)

See merge request !5095

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

`avatar.present?` goes through CarrierWave, and checks that the file
exists on disk and checks its filesize. Because we're hitting the disk,
this adds extra overhead to something where the worst-case scenario is
rendering a broken image.

Instead, we now just check that the _database attribute_ is present,
which is good enough for our purposes.

See https://gitlab.com/gitlab-org/gitlab-ce/issues/19273

Upgrade Doorkeeper from 3.1.0 to 4.0.0.

Includes Rails 5 support and various bug fixes. Working toward #14286.

Changelog: https://github.com/doorkeeper-gem/doorkeeper/blob/master/NEWS.md#400

See merge request !5055

Remove current user link to the profile from sidebar

Because user avatar and link to the profile are duplicated in the header now

Related to https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4939 and https://gitlab.com/gitlab-org/gitlab-ce/issues/18544

cc @iamphill @jschatz1 

See merge request !5077

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Add profile settings link to header user dropdown

It allows you to get to profile settings right from avatar without triggering sidebar 

Based on https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5077#note_12878162 

See merge request !5090

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

- Group / project members cannot request access
- Group members cannot request access to a group's project

This addresses an issue where project owners could request access
to their own project, leading to UI inconsistency where their requester
status would replace their owner status.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Instrument cache fetch hit and misses

See merge request !4993

Fix wording around NGINX Shibboleth setup

![image](/uploads/de69ad7a056083ab4ca337d9cacad6e2/image.png)

__________

![image](/uploads/bd8081aa0e3a7bd0568267c4a485df5d/image.png)



See merge request !5034

Add missing privileges to MySQL database

Closes gitlab-org/gitlab-ce#19321

See merge request !5079

Add index on both Award Emoji user and name

See merge request !5061

[ci skip]

Move global ci entries handling from legacy to new config

## What does this MR do?

This MR moves responsibility of handling global CI config entries (like `image`, `services`), from legacy `GitlabCiYamlProcessor` to new CI Config

## Why was this MR needed?

This is the next iteration of CI configuration refactoring

## What are the relevant issue numbers?

#15060

## Does this MR meet the acceptance criteria?

- 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)

See merge request !4820

Assert against `ActionMailer::Base.deliveries` relatively

- Closes #19496 
- Fixes `master` build


See merge request !5082

- Look for a `change` in its size rather than asserting against an
  actual size.

- This previously failed because another spec had an email in
  `ActionMailer::Base.deliveries`, which failed this `be_nil` assertion.

Add troubleshooting section for SMTP settings



See merge request !5046

Added user avatar to header

## What does this MR do?

Adds  the users avatar to the header with a dropdown for profile & sign out.

## What are the relevant issue numbers?

Closes #18543 

## Screenshots (if relevant)

![Screen_Shot_2016-06-27_at_12.47.34](/uploads/852d0eb7075eefcf21f5cf5ff71a389a/Screen_Shot_2016-06-27_at_12.47.34.png)

![Screen_Shot_2016-06-27_at_12.47.36](/uploads/6cb29843d3a12bbf2d3ed2a7c9bde770/Screen_Shot_2016-06-27_at_12.47.36.png)

See merge request !4939

Handle custom Git hook result in GitLab UI

## What does this MR do?

This MR fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19190
It allows to show messages from git custom hooks

## Screenshots (if relevant)

![joxi_screenshot_1467651998090](/uploads/7f814523c96712c07b4f4b52c843aab3/joxi_screenshot_1467651998090.png)

See merge request !5073

Fix dead links in the docs (Jun 2016)

## What does this MR do?

Fix dead links in the docs found as of Jun 2016.

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

n/a

## Why was this MR needed?

This MR must improve UX on docs.gitlab.com.

## What are the relevant issue numbers?

Closes #19156 

## Does this MR meet the acceptance criteria?

- No [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) updated
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [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 !4921