More Javascript testing

Continuation of !715

See merge request !736

Push event: Nest link in strong tag, not vice-versa

Closes #1022

See merge request !755

Also removes redundant `unbind` call

Removes redundant enableButton/disableButton extensions, and adds specs
for the jQuery extensions.

Closes #1022

Don't notify users mentioned in code blocks or blockquotes.

cc @rspeicher

See merge request !753

Render Group and Project descriptions with our Markdown pipeline

Continuation of !727, this ensures external links in these fields also get `rel="nofollow"` added.

Bonus: Emoji now works in them! ✨

See merge request !735

And make it more generalized for all filter specs.

When this option is `:description`, we use a more restrictive whitelist.
This is used for Project and Group description fields.

GitLab CI service sends gitlab-ci.yml file

See merge request !689

Specify shell while run me as git user

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

Create and edit files in web editor via rugged

- [x] create file via rugged
- [x] update file via rugged
- [x] remove file via rugged
- [ ] fix tests
- [x] remove satellites code
- [x] create activity event for new/edit file via rugged
- [x] base64 support

Part of https://dev.gitlab.org/gitlab/gitlabhq/issues/2300

See merge request !751

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>

Fix link_to_gfm with only a reference having the incorrect link

Before:

```ruby
link_to_gfm("#4", "/foo")     # => "<a href="/namespace/project/issues/4" class="gfm gfm-issue">#4</a>"
link_to_gfm("See #4", "/foo") # => "<a href="/foo">See </a><a href="/namespace/project/issues/4" class="gfm gfm-issue">#4</a>"
```

After:

```ruby
link_to_gfm("#4", "/foo")     # => "<a href="/foo">#4</a>"
link_to_gfm("See #4", "/foo") # => "<a href="/foo">See </a><a href="/namespace/project/issues/4" class="gfm gfm-issue">#4</a>"
```

Closes #192
Closes #1721
Closes [GitHub #7115](https://github.com/gitlabhq/gitlabhq/issues/7115)

See merge request !739

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

Add an option to automatically sign-in with an Omniauth provider

Split of !669 as requested

This is useful when integrating with existing SSO environments and we want to use a single Omniauth provider for all user authentication.

See merge request !723

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>

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