Pull recent master from CE into EE

Fixes #113

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

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

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

Conflicts:
	LICENSE
	VERSION
	app/controllers/omniauth_callbacks_controller.rb
	app/helpers/application_helper.rb
	app/helpers/merge_requests_helper.rb
	app/models/group.rb
	app/models/project.rb
	app/models/project_team.rb
	app/views/admin/groups/edit.html.haml
	app/views/groups/_projects.html.haml
	app/views/groups/edit.html.haml
	db/schema.rb
	doc/install/installation.md
	doc/integration/README.md
	lib/gitlab/git_access.rb
	lib/gitlab/markdown.rb
	spec/helpers/merge_requests_helper.rb
	spec/models/merge_request_spec.rb

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

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

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

Consistent headers

Kanban improvements

When drag from unassigned to assigned column - issue assignee avatar updated

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

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

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

empty brand image are displayed as empty image_tag on login page

When using a custom appearance without uploading an image, an empty HTML img-tag is rendered, showing up badly in some browsers: http://i.imgur.com/EN9WpuA.png
Also, the empty img-tag was rendered in the admin/appearance form.

Conflicts:
	VERSION

Release 6.9.4-ee

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

Consistent readme

Provide better email subject lines from email on push service

If one commit is pushed, display the commit message in the subject
line. Otherwise display the number of commits pushed to the repository.

Enable CentOS packaging.

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

Responsive sidebar fixes

This fixes two major issues with the responsive sidebar

1. Overlapping content by the label:
The label and sidebar is now always on the right side of the screen. This makes it always easy to find (better UX) and prevents it from overlapping most content. Additionally, on xs screens, instead of the side-attached label, for some pages it will show an extra button in the head instead of a buttons that overlaps.

2. Pop up of sidebar on changing pages.

Show file mode changes on commit page

## Before:

![Screenshot 2014-06-14 22.55.18](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/3f89dfa841/Screenshot_2014-06-14_22.55.18.png)

## After:

![Screenshot 2014-06-14 22.54.11](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/5e7550d595/Screenshot_2014-06-14_22.54.11.png)

move all sidebars to one side for improved UX; add button in head of projects/issues and milestones instead of tab on side of screen to prevent overlapping of content

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

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

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

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

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

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

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

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

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

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

Responsive sidebar

Puts the sidebar on the dashboard in a off-screen sidebar that can be called by pressing a button with a fixed position.

Any sidebar with the .responsive-sidebar class will follow this behavior. Button must be added manually.

Cleanup help

Remove a lot of unused help files.
Apply `wiki` css to help content