Make search for projects case insensitive

### What does this MR do?

This MR makes the search for projects case insensitive.

### Why was this MR needed?
Currently the search for projects is case sensitive.
You can test this on gitlab.com with the search string "perforce" for example.
* perforce returns 2 projects
* Perforce returns 5 projects
* PERFORCE returns 0 projects

This makes it harder to find the projects you are looking for.
With this MR users can find more projects, since they don't need to worry about not seeing some projects just because of an upper letter.

@dblessing Can you take a look at this? :)

See merge request !296

Fix sort dropdown partially not showing on screen.

This MR fixes the sort dropdown menu partially not showing on the screen.
Closes gitlab-org/gitlab-ce#986

Screenshot of the Problem:
![Problem](https://gitlab.com/uploads/gitlab-org/gitlab-ce/8d442e872c/Screenshot_from_2015-01-17_15_18_41.png)

@dzaporozhets Can you take a look at this?

See merge request !299

Remove unneeded password_confirmation from seed.

Stability improvement

Add description attribute to group API (GET and POST)

Add krb5 dependency for packaging

Typo in project API events comment

Update gitlab-shell in docs to 2.4.1

Add description to merge request API documentation

See merge request !301

The description can be provided when creating or updating a merge
request.
Signed-off-by: Loic Dachary <loic@dachary.org>

Fix commits pagination

See merge request !1406

see gitlab-org/gitlab-ce#986

Update import doc

Documentation update for #1900

See merge request !1405

Allow to specify home page for non logged-in users

See merge request !1404

Mobile fixes

See merge request !1403