Downcase commit author email for matching with users

Closes #3854 

See merge request !1992

Add number_with_delimiter to build counts



See merge request !2046

Fix migrations for postgres on test environment

Make `be rake db:migrate:reset RAILS_ENV=test` work
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !2002

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

[ci skip]

Fix typos in integration docs

[ci skip]

See merge request !1999

Update init script only once

The init script is already being updated in section 6.

See merge request !2038

[ci skip]

Simplify shared User SSH key steps

See merge request !2043

Split up 20min+ `spec:other` and `spinach:project` builds to increase parallelization



See merge request !2036

[ci skip]

Remove default_branch from project API creation documentation

The docs erroneously included `default_branch` as an option in project creation, but this field does not make sense because a new project has an empty repo with no branches. 

Closes #3937

See merge request !2034

Improve styling for mixed list styles

Tasks in an ordered list will now also show their numbers.

Closes #2488

Related to #3921

See merge request !2026

Fix size of disabled 'New file' button

Before:

![Screen_Shot_2015-12-09_at_13.52.30](/uploads/d3d5dce9b5fcb5a4292177acba323d17/Screen_Shot_2015-12-09_at_13.52.30.png)

After:

![Screen_Shot_2015-12-09_at_13.52.20](/uploads/a813fb817cfd4bff6b17fad34e79f3b1/Screen_Shot_2015-12-09_at_13.52.20.png)


See merge request !2040

Remove RedCloth and no longer allow bundle-audit to fail

As far as I can see, RedCloth wasn't used at all.

See merge request !2037

When rendering the clone page, check user profile to decide default
clone protocol

If the user has uploaded SSH-keys, use SSH; otherwise, use http(s).

Closes #3504.

See merge request !1998

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

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

Signed in Admin can add/remove himself to a group/project

Fixes #3640 

/cc @JobV Could you have a look as well?

See merge request !1942

The init script is already being updated in section 6.

Remove the prepended v on GitLab Workhorse upgrade doc

Fix for https://gitlab.com/gitlab-org/gitlab-workhorse/issues/4



See merge request !2020

Merge when build succeeds

### What does this MR do?
Adds a button to a MR when the build/ci is running so it can be merged when/if the build is successfull.

### Are there points in the code the reviewer needs to double check?
English spelling and whether or not the grammer is correct.

### Why was this MR needed?
When you expect its all good, and don't want to revisit the current MR it can be accepted allready.

### What are the relevant issue numbers / Feature requests?
Fixes #2640 -- although `Merge if green` is replaced with `Merge when the build succeeds` the general idea is the same.

### Screenshots (if relevant)
![Screenshot_from_2015-12-07_10-34-39](/uploads/b90b558b6ad6c8266bc9c96120d86f96/Screenshot_from_2015-12-07_10-34-39.png)

![Screenshot_from_2015-11-02_17-26-56](/uploads/9f52f56e3c5e9ec63cb8f42978c92a52/Screenshot_from_2015-11-02_17-26-56.png)
![Screenshot_from_2015-11-02_17-27-03](/uploads/119fc18c9b15ff73dc38010ac5b6244a/Screenshot_from_2015-11-02_17-27-03.png)

![Screenshot_from_2015-12-03_10-08-14](/uploads/bad7b35c7d129981d43631877c958be0/Screenshot_from_2015-12-03_10-08-14.png)

![Screenshot_from_2015-11-02_17-27-16](/uploads/b616d750a16cc11ba72f2ca84213515e/Screenshot_from_2015-11-02_17-27-16.png)

### Further considerations
What if there are minor things needed solving, e.g. Rubocop, the current implementation will reset the approved status of the MR. It might be a consideration keep the approval for team member, or even guests. This would require an extra option in the Admin screen, though might add extra value.

#### TODO
- [x] Docs
- [x] Specs

/cc @DouweM @rspeicher

See merge request !1729

Introduce CI documentation for services and languages

This introduces guide for PHP, a bunch of services (databases) and cleans up some docker references.

With this there are bunch of example projects in https://gitlab.com/groups/gitlab-examples.

/cc @JobV @axil 

See merge request !1917