Issue boards new issue form

## What does this MR do?

Adds a new issue form into the issue boards lists.

## Screenshots (if relevant)

![Screen_Shot_2016-10-03_at_14.57.30](/uploads/17fe6cd37bd020a2ee1688e0b496c18f/Screen_Shot_2016-10-03_at_14.57.30.png)

![Screen_Shot_2016-10-03_at_14.57.32](/uploads/c3f12bcb9ff9a0e7ce5b0bb06dfb0dd7/Screen_Shot_2016-10-03_at_14.57.32.png)

## What are the relevant issue numbers?

Part of #21219

See merge request !6653

Revert "Label list shows all issues (opened or closed) with that label"

## What does this MR do?

Revert changes made on https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5991. Reasoning here: https://gitlab.com/gitlab-org/gitlab-ce/issues/21691#note_16516861

## 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 [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)
- [ ] 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 #21691

See merge request !6695

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

MergeRequest new form load diff asynchronously

## What does this MR do?

Don't return diff tab content from the server when request for a new merge request

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

## Why was this MR needed?

To avoid 502 errors due to this controller action takes to much time

## What are the relevant issue numbers?

Relates #13912

## 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
  - [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 !5844

Fix broken handling of certain calls in GitHub importer client

## What does this MR do?
It changes/fixes the behavior of request handling in GH client. Now it returns the response directly if it's not a collection of resources. Otherwise, it checks for a passed block, if true, then it yield each page to said block, if not, it collects all response in a single array then returns it.

Closes #22998

See merge request !6703

API: Use Grape DSL to document access requests and members endpoints

Part of #21979, depends on gitlab-org/gitlab-ce!6267 and gitlab-org/gitlab-ce!6266.

See merge request !6269

See !6096.

Issue Board API support

## What does this MR do?

Adds support for Issue Board in the API.

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

~~Double check whether the Issue Board list movement fix is needed.~~ 

*Moved to a separate issue.* [#22890](https://gitlab.com/gitlab-org/gitlab-ce/issues/22890)

## Why was this MR needed?

Currently the API offers partial support to a project's Issue Board indirectly through Labels.
This MR adds support for listing, creating, moving and removing board lists.

## 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?
[#22195](https://gitlab.com/gitlab-org/gitlab-ce/issues/22195)

See merge request !6646

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

Added validation so the user shouldnt be able to submit the form without the title present

Stop issue being dragged if it doesn't have an ID

This is because contributors can't create issues with labels

Changed how the data is passed into Vue resource

Added for attribute to title label

This was causing issues with moving from the done list

Fixed issue when dragging cards

Closes #21219

Gitlab::Redis bigger connection pool on sidekiq workers

See merge request !6657

Document GIT_STRATEGY=none

## What does this MR do?

Adds documentation for the new `GIT_STRATEGY=none` option in GitLab Runner v1.7

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

Speling and grammar, of course.

I'm using the term 'project workspace' to refer to the build directory, which is a Jenkins-ism. Is there preferred alternative wording?

## Why was this MR needed?

Discoverability of new feature

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- <strike>[ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added</strike>
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- <strike>[ ] API support added</strike>
- <strike>Tests</strike>
  - <strike>[ ] Added for this feature/bug</strike>
  - <strike>[ ] All builds are passing</strike>
- <strike>[ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)</strike>
- [ ] 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 #21337 

Depends on http://gitlab.com/gitlab-org/gitlab-ci-multi-runner/merge_requests/332

See merge request !6577

Closes #22998

Add more info in Cycle Analytics docs

- Clarify the Plan to Code stages in Cycle Analytics docs based on feedback
  https://about.gitlab.com/2016/09/21/cycle-analytics-feature-highlight/#comment-2915715168
- Add a workflow example

See merge request !6562

[ci skip]

Improve asynchronous pipeline processing

## What does this MR do?

This MR improves asynchronous processing of pipeline.

## Why was this MR needed?

It eliminates some race conditions and improves performance.

## 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
  - [x] All builds are passing

## What are the relevant issue / merge request numbers?

Related merge request:  !6410  
Extracted from !6411

See merge request !6650

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

Don't allow flay to fail.

It's passing now so there's no reason to have it set to allow failure anymore.

See merge request !6707

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