sync sidebar DOM state on page:change to minimize split-second appearance of the sidebar in certain situations

Replace animateEmoji timeout with eventListener

## What does this MR do?
Replaces the end animation timeout for awards_handler.js with an eventListener that listens for the animationEnd event

## Are there points in the code the reviewer needs to double check?
Check for any side effects

## Why was this MR needed?
Improve code quality so that it is easier to understand

## What are the relevant issue numbers?
Closes #20679 

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [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 !5690

Pass dependencies to CI configuration nodes

## What does this MR do?

This MR makes it possible to pass dependencies to CI configuration nodes.

## What are the relevant issue numbers?

See #15060

## Does this MR meet the acceptance criteria?

- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing

See merge request !6009

Fix merge conflict size limit

## What does this MR do?

The merge conflict size limit was set to 100 KB, but the docs (and the test repo, which the feature specs use) say 200 KB!

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

Don't think so.

## Why was this MR needed?

Derp.

## 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)
- Tests
  - [x] 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 !6052

Escape search terms before passing to Regexp

## What does this MR do?

Use `Regexp.escape` to escape the search terms before passing them to `Regexp.new`.

## Why was this MR needed?

- evaluated regular expressions in search terms lead to unexpected result
- unbalanced parentheses in search term lead to server error 

## TODO

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

## What are the relevant issue numbers?

fixes #14360

See merge request !6241

Use PipelinesFinder in Pipelines API

## What does this MR do?

Sort output for the API endpoint, and uses the PipelinesFinder there.

## 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)

## What are the relevant issue numbers?
Closes #21566

See merge request !6094

Fix styling of shortcuts modal

## What does this MR do?

Fixes some weird height issue in the shortcuts modal.

## Screenshots (if relevant)

### Before

![Screen_Shot_2016-09-07_at_15.13.09](/uploads/5c4d7716e355794c8aa9764e0fa53f4e/Screen_Shot_2016-09-07_at_15.13.09.png)

### After

![Screen_Shot_2016-09-07_at_15.12.57](/uploads/6f5c145963b4b89910be44b6b254e117/Screen_Shot_2016-09-07_at_15.12.57.png)

See merge request !6244

Add issues filters reset btn

## What does this MR do?

Adds a button to the issues filter to reset all filters. I also lightly refactored a nearby method.

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

At the moment, the user can click the reset button even when no filters have been set. I didn't really like how it looked flashing the link on and off depending on whether a user had added a filter. I prefer having it there all the time, so the user is aware of it. But it wouldn't be difficult to hide if no filters have been set, if that's preferred.

## Why was this MR needed?

So users can reset filters when they're filtering issues.

## What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/14016

## Screenshots (if relevant)

![reset-filters](/uploads/562916158ce7b0179794e19f88f5c2e3/reset-filters.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 !5330

Fix: Switch sample values for $CI_SERVER_REVISION and $CI_SERVER_VERSION.

See the general Documentation guidelines http://docs.gitlab.com/ce/development/doc_styleguide.html.

## What does this MR do?

There is a sample in this document showing the possible values of the predefined CI variables. Those of **CI_SERVER_REVISION** and **CI_SERVER_VERSION** were mixed up. I fixed that.

See merge request !6243

API for CI Lint

## What does this MR do?
Add API for CI Lint. Can check if `.gitlab-ci.yml` content is valid.

## What are the relevant issue numbers?
Closes #15571 

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] API support added
- [x] Documentation
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing

cc @ubudzisz @grzesiek @yorickpeterse

See merge request !5953

Issue #21440: Small fix to curl example for adding member to project

## What does this MR do?
Two lines changed in docs to move the user_id field out of the url and onto the query string 

## Why was this MR needed?
Issue #21440 reported under Issues. The documentation example for adding members to a project had a slight problem. 

## What are the relevant issue numbers?
Closes #21440.

See merge request !6236

Gitlab -> GitLab

## What does this MR do?
Fix GitLab capitalization

See merge request !6235