Gitlab flow

This article describes the best practices we use at GitLab B.V.
This is still a draft, please comment and submit improvements.

See merge request !176

Conflicts:
	CONTRIBUTING.md

Faster rev list

Since rugged does not support path filtering yet it affects GitLab performance.
So we use `git rev-list` as temporary but fast and reliable solution for looking last commit of tree

Fixes #1622

See merge request !1127

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

Omnibus words

As discussed:

We want to standarize the words 'omnibus package' to avoid (apparent) confusion regarding the installation and setup methods.

See merge request !1126

Issue box redesign

I complained before about the issue box looks. This is a proposed redesign.

The background of the issue is slightly lighter than the comments, so there is a clear distinction.

To make sure the issue then doesn't disappear, the shadow is slightly strongly (but still barely noticeable, to keep it flat).

The left top corner is round to highlight the status 'label', as it were a real label.

See merge request !1125

Improving graphs: add new commits graphs page

This MR adds new page to graphs sections with commits statistic

![Screenshot 2014-09-26 20.32.01](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/61fd84c4d6/Screenshot_2014-09-26_20.32.01.png)

See merge request !1124

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

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

Remove type submit from button_tag since default.

Replace empty? || nil? with blank?.

Typo indiciated -> indicated.

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

Refactor graphs

This is first step of refactoring graphs. It includes removing all outdated and non-working stuff.

Related to #1590

See merge request !1123

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

* remove commits stats page (will be replaced by graphs)
* remove additions/deletions from graph because of bad performance
* keep graph logic in gitlab
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

Fix branch removal

Fix exception on post-receive worker when remove branch

See merge request !1122

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

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

Remove unnecessary page. from tests.

Update application.js.coffee

The require jquery.turbolinks should be before the require turbolinks.

https://github.com/rails/turbolinks => "Add the gem to your project, then add the following line to your JavaScript manifest file, after jquery.js but before turbolinks.js"

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

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