Send ajax request for label update only if they are changed

## What does this MR do?

At the moment we send requests to update the labels on issue even if nothing has been changed. This fixes that and only sends requests when something has actually been changed.

The code gets the initial selected values based on the inputs & then compares that to the selected values when submitting. If they are equal, then no request is sent.

## What are the relevant issue numbers?

Closes #19472 

See merge request !5071

Optimize GitHub importer for speed and memory

See merge request !6552

Fix pipelines table headers

## What does this MR do?

Removed stages loop for a single 'Stages' header.

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

## Why was this MR needed?

The headers were messing the table up. Note the redundant headers and squished cells.

![Screen_Shot_2016-09-27_at_14.40.51](/uploads/331b08c30a4af59cefc460ab4f3c2a61/Screen_Shot_2016-09-27_at_14.40.51.png)

## Screenshots (if relevant)

![Screen_Shot_2016-09-27_at_14.39.04](/uploads/687895e9152d4fe8d8f3bfc1233af39b/Screen_Shot_2016-09-27_at_14.39.04.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
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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)

## What are the relevant issue numbers?


Closes #22472

See merge request !6542

Fix IssuesController#show degradation including project on loaded notes

See merge request !6540

* No need to re-fetch issues from GH to read their labels, the labels
  are already there from the index request.
* No need to look up labels on the database for every application, so we
  cache them.

This should avoid having large memory growth when importing GitHub repos
with lots of resources.

Add more tests for calendar contribution

## What does this MR do?
Add more tests for calendar contribution

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

## Why was this MR needed?
Improve test coverage for calendar

## Screenshots (if relevant)
None

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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)

## What are the relevant issue numbers?
Closes #22347

See merge request !6421

Use gitlab-shell v3.6.2

## What does this MR do?

Bump gitlab-shell to v3.6.2 to be able to enable GIT_TRACE_PERFORMANCE output to a log file

Relates #22053

See merge request !6367

Be nice to Docker Clients talking to JWT/auth

## What does this MR do?

Makes all errors returned by JWT endpoint to be docker-compatible.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/22465

See merge request !6536

Fixed issue board label filtering not removing labels

## What does this MR do?

When trying to remove a label filter it would actually add it instead making it impossible to remove the label filter without modifying the URL. This fixes that by correctly removing the label from the filter.

## What are the relevant issue numbers?

Closes #21417

See merge request !6208

Fix Import/Export milestone and 1to1 models issue

Fix 1to1 relations on project failing to be importing and milestone ordering issue.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/22585

See merge request !6521

Improve how MergeCommit#merge_commit_message builds the message

Now a merge request with a blank description will no longer produce a
merge commit message like this:

```
Merge branch 'foo' into 'master'

Bring the wonders of foo into the world



See merge request !7283
```

What an improvement! 🎉

See merge request !6450

Add organization field to the user profile

## What does this MR do?

Add organization field to the user profile 

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

no

## Why was this MR needed?

So we can let users fill organization information separately

## Screenshots (if relevant)

![Screen_Shot_2016-09-26_at_7.32.27_PM](/uploads/d11a9a86aa22227f9c9915d195106c5f/Screen_Shot_2016-09-26_at_7.32.27_PM.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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [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?

https://gitlab.com/gitlab-org/gitlab-ce/issues/21903

See merge request !6526

New `Members::ApproveAccessRequestService`

Part of #21979.

## Does this MR meet the acceptance criteria?

- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 !6266

Now a merge request with a blank description will no longer produce a
merge commit message like this:

```
Merge branch 'foo' into 'master'

Bring the wonders of foo into the world

See merge request !7283
```

What an improvement! 🎉

Use GitLab Routing helpers for the documentation URL in `LfsHelper`

To reduce conflicts from changes introduced in gitlab-org/gitlab-ee!740

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/740#note_15782550

See merge request !6529

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

* Add newline to user organization spec according to test guide
* Remove unnecessary comments from user organization database migration
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>

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

Remove Sprockets deprecation warning



See merge request !6535

Remove inline JavaScript for Search autocomplete

## What does this MR do?

Remove inline JavaScript from the search partial for Search autocomplete.

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

That this doesn't break anything (it didn't when I tested it!)

## Why was this MR needed?

Inline scripts are bad, this removes a few of them.

## What are the relevant issue numbers?

#18231 and #19866

## Does this MR meet the acceptance criteria?

- Tests
  - [ ] 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 !5284

Upgrade unicorn and unicorn-worker-killer.

Upgrade unicorn from 4.9.0 to 5.1.0 and unicorn-worker-killer from 0.4.2 to 0.4.4. This includes Rack 2.0 support which is necessary for Rails 5.

Changelog for unicorn: http://unicorn.bogomips.org/NEWS.html

Changelog for unicorn-worker-killer: https://github.com/kzk/unicorn-worker-killer/blob/bdec225f028d1bda01b5888578c479b0c705f1a8/ChangeLog

See merge request !6463

Improve project_with_board factory to create the default lists

## What does this MR do?

Create the default lists after creating a project with the `project_with_board` factory. This makes the setup phase on tests be more simpler.

## Why was this MR needed?

These two lists are present in every issue board, so we don't have to create them manually in every test.

See merge request !6480

Pass the full project path for resolve buttons

## What does this MR do?

The full project path is passed from the HTML into the JS rather than the resolve button JS generating the URL based on the the namespaces.

@smcgivern @stanhu Do we have anyway of adding tests for installs with relative URLs?

## What are the relevant issue numbers?

Closes #21704

See merge request !6129

Added v-cloak to resolve disc button

## What does this MR do?

Adds `v-cloak` to the `Resolve discussion` button to avoid handlebar syntax displaying before the component compiles.

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

## Why was this MR needed?

## Screenshots (if relevant)

## 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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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)

## What are the relevant issue numbers?


Closes #22640

See merge request !6528