Fix javascript error with deleting messages in issue or merge request

Elements searched for by jQuery no longer existed in the DOM.
Javascript was also unnecessarily complex, for using jQuery

Fixes #8109

See merge request !2442

Moving 8.5 change to 8.4 since we're merging master into stable for now.

[ci skip]

Elements searched for by jQuery no longer existed in the DOM.
Javascript was also unnecessarily complex, for using jQuery
Fixes #8109

Prefer custom WOFF2 fonts if the browser supports them

[ci skip]

See merge request !2443

[ci skip]

Add triggers API

References #4264

See merge request !2286

Fixes new layout

* fix empty project page
* fix commit -> builds page missing margin

See merge request !2440

* master: (150 commits)
  fixes margin and padding
  Update mailroom/postfix documentation [ci skip]
  Fix css mess around git clone panel. Align it properly
  Fix missing padding for user/group pages
  Fix parse_gollum_tags matcher
  Update documentation on Banzai::Filter::GollumTagsFilter
  Add tests for the wiki pipeline
  Refactoring Banzai::Filter::GollumTagsFilter
  Make sure the .git is at the end on Gitlab::GithubImport::WikiFormatter
  Remove GollumTagsPipeline
  Refactoring Gitlab::GithubImport::Importer
  Remove unnecessary brackets on WIKI_SLUG_ID route constraints
  Move js function to removing accents to vendor/assets/javascripts
  Update CHANGELOG
  Use the WikiPipeline when rendering the wiki markdown content
  Add Banzai::Filter::GollumTagsFilter for parsing Gollum's tags in HTML
  Relax constraints for wiki slug
  Import GitHub wiki into GitLab
  Move Ci::Build#available_statuses to AVAILABLE_STATUSES constant in CommitStatus
  Revert changes to how the notes are paginated in the API
  ...

Conflicts:
	doc/api/README.md
	lib/api/entities.rb

fixes margin and padding

![Screen_Shot_2016-01-14_at_3.10.57_PM](/uploads/83c8b36b01439cb629c91b2dd3a85692/Screen_Shot_2016-01-14_at_3.10.57_PM.png)


See merge request !2439

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

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

Properly generate diff of orphan commits, like the first commit in a
repository

Fixes gitlab-org/gitlab_git#14

See merge request !2427

Backport two commits from EE

Backport part of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/110

See merge request !2424

Fix cross-project reference clipboard text

See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2339

See merge request !2420

Update mailroom/postfix documentation [ci skip]

I worked with a customer to troubleshoot some strange Postfix and Mailroom issues. These doc updates aim to help other users avoid the same confusion.


See merge request !2430

Various UI fixes

* Fix missing padding for user/group pages
* Fix align of clone panel
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !2433

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

Add builds API

References #4264

See merge request !2207

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

Add pagination headers to already paginated API resources

Following #3045, I've added pagination headers using already available Kaminari methods.

## Pagination headers in action

![Screen_Shot_2016-01-14_at_12.14.53](/uploads/88807f754dd9aafbb24da85f6bdf9521/Screen_Shot_2016-01-14_at_12.14.53.png)

---

I've also added a shared example to test paginated API resources.

A possible next step would be to paginate all the API resources that return an array.

See merge request !2426

Import GitHub wiki into GitLab

Closes #2834 

GitHub doesn’t apply any constraints to theirs wiki slug allowing chars like ,, :, *, etc, we need to remove our constraints or some wiki pages will not be available after they are imported.

Some wikis use the Gollum's tags to link its internal/external resources like: images, urls, wiki pages, etc. So, to avoid that wiki links/images displays completely broken after they were imported, we added a new `WikiPipeline`, that for now will parse only simple links, and image tags.

##### Before `WikiPipeline`:

![Screenshot_2016-01-11_20.14.48](/uploads/46fd5dbb5acfc70aa8ecca3050b675e4/Screenshot_2016-01-11_20.14.48.png)

##### After `WikiPipeline`:

![Screenshot_2016-01-11_20.15.56](/uploads/b1d94aa852f385f867a7868c358b4257/Screenshot_2016-01-11_20.15.56.png)

See merge request !2324

Unsubscribe from thread through link in email footer

Closes #3437 

![Screenshot_from_2015-12-11_15-35-06](/uploads/cfb3d8737d4757f527995411f103d0ce/Screenshot_from_2015-12-11_15-35-06.png)

![Screenshot_from_2015-12-11_15-35-56](/uploads/9b7121be7ce4b05e5995ca6d38c5bea4/Screenshot_from_2015-12-11_15-35-56.png)

See merge request !2068

Standartize buttons and fields size

Fixes #8069 and #8070

See merge request !2428