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

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

If a branch is deleted with an open merge request, amended offline, and then pushed again,
GitLab doesn't bother to update the merge request even though the last commit ID and/or
code may have changed. This MR ensures that each push will update any relevant merge
requests and adds a system note if this happens as well.

Closes #2926

Performance is improved in two steps:

1. On PostgreSQL an expression index is used for checking lower(email)
   and lower(username).
2. The check to determine if we're searching for a username or Email is
   moved to Ruby. Thanks to @haynes for suggesting and writing the
   initial implementation of this.

Moving the check to Ruby makes this method an additional 1.5 times
faster compared to doing the check in the SQL query.

With performance being improved I've now also tweaked the amount of
iterations required by the User.by_login benchmark. This method now runs
between 900 and 1000 iterations per second.

Slightly refactor runner status detection: moving it to Runner class

Signed-off-by: Kamil Trzcinski <ayufan@ayufan.eu>

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

Closes #2998

Closes https://github.com/gitlabhq/gitlabhq/issues/8763

In order to be consistent with !1490 doing it for the web interface

[ci skip]

Closes https://github.com/gitlabhq/gitlabhq/issues/9715

[ci skip]

 - Changed to margin for vertical allign as used in bootstrap 3 original
 - Also added an `active` state to show when the extra items are enabled

[ci skip]

Closes #2619

Closes https://github.com/gitlabhq/gitlabhq/issues/9631

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

Closes #2485

Change "+" icon under "Files" section to have three options:

* Create file
* Upload file
* New directory

Upload file is no longer accessible from the "Create file" page.
Users can now select a target branch in upload file as well.

Closes #2799: Fixes a bug where file modes were overwritten after a commit

Closes https://github.com/gitlabhq/gitlabhq/issues/8253: Existing files
can no longer be overwritten in the "Create file" section.

Closes #2557

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

For temporary compatibility with other services like Jenkins we ask for
CI status via AJAX request if there is no commit status in GitLab
database

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

[ci skip]

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