Improve JIRA issue closing

- Zendesk ticket: https://gitlab.zendesk.com/agent/tickets/11034

### Expected behavior

When a merge request has 'Fixes JIRA-1234' in the description the issue should not only be transitioned but also record a comment (regardless of workflow type in JIRA).

### Observed behavior

Depending on the configured workflow a comment may or may not be allowed while transitioning to a new state. In my testing the newest JIRA default workflow did not allow comments while transitioning to 'Done', for example. The 'classic' workflow does, though. 

This merge request splits the transition and comment in to two API calls. The advantage is that the comment will be recorded 100% of the time instead of it being dependent on the workflow configuration.

Also, JIRA returns a '204' response code when the transition is successful. I added '204' to the success conditional because we were generating an error in the current configuration even though the transition was successful.

See merge request !45

CE upsteram



See merge request !48

Update changelog



See merge request !49

Allow groups to appear in the search results if the group owner allows it

https://dev.gitlab.org/gitlab/gitlabhq/issues/2565

See merge request !1751

update example of regex for pytest-cov



See merge request !1745

fixed typo in installation manual

Add Facebook authentication

See merge request !1740

Replace all usages of `git` command with configurable binary path

Closes #3311

See merge request !1742

Only redirect to homepage url when its not the root url

It was possible to create an infi redirect when the user set up the
`home_page_url` to redirect to the main URL of the gitlab instance.

This fix makes sure this redirect is not possible.

Fixes #1020 

/cc @dblessing 

See merge request !1703

Improvements to profile page UI

* add separator between tabs
* show project avatars
* fix tooltip offset on user calendar
* remove gray hover for tabs
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

For #3042

See merge request !1747

* add separator between tabs
* show project avatars
* fix tooltip offset on user calendar
* remove gray hover for tabs
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Improve performance of creating projects



See merge request !1650

Remove duplicate orders

This changes the default order from `created_at DESC, id DESC` to just `id DESC` as this achieves the same results without the overhead of having to sort data twice (we've seen queries go from 200ms to just a few ms by removing the double sort).

cc @jacobvosmaer @dzaporozhets @rspeicher @DouweM 

See merge request !1735

Bump stamp to ~> 0.6.0

Closes #2801

See merge request !1732

Closes #3311

[ci skip]

Closes #2801

Spread out runner contacted_at updates

This is meant to prevent having too many concurrent UPDATE requests
caused by runners checking in.

See merge request !1722

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

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

Fix clipboard button overflow
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !1739

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

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