Refactor Repository Caching

Related issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/13515

See merge request !2936

Fix avatar stretching by providing a cropping feature

Originally by @nesk at https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2773

Fixes #7959

See merge request !2951

Created helper class to hide content in issue sidebar when collapsed

![Screen_Shot_2016-02-25_at_10.38.39](/uploads/ca49cc230edf7e71b7726e905f523092/Screen_Shot_2016-02-25_at_10.38.39.png)

Closes #13764

See merge request !2968

Add builds URL to gitlab-ci script

Add builds URL to gitlab-ci script

Related to: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2681

See merge request !2962

Refactor html/css for lists and improve help UI page

* dry lists html/css removing a lot of style duplicates
* fix snippets list to match common style
* fix extra bottom margin for groups list
* improve help page ui so it looks clean

Fixes #11873 

See merge request !2977

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

Fix syntax error in autosave coffeescript.

According to http://coffeescript.org/#try , `catch` needs to have an argument.

Otherwise, `Error: Parse error on line 19: Unexpected 'INDENT'` error is raised when converting to JS by coffee-script.

Fixes gitlab-org/gitlab-ce#3302


See merge request !2985

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>

Move "I should see Crowd login form" feature to a view spec

We were doing all kinds of code gymnastics to "enable" Crowd in the
feature spec and this would sometimes cause a transient failure.

Really what it's testing is if the Crowd login form shows when Crowd's
enabled, so this is much better suited to a view spec.

See merge request !2963

# Conflicts:
#	.gitlab-ci.yml

Reformats confusing '[named here]' section for 3rd party code attribution

Weird formatting originally. Which of the following is the proper format for attribution?

1. Submitted on behalf of a third-party: [David Alexander]
1. Submitted on behalf of a third-party: [[] David Alexander]
1. Submitted on behalf of a third-party: [] David Alexander
1. Submitted on behalf of a third-party: [[ David Alexander ]]
1. ... _etc._

With this change, it allows for either of the following formats:

1. Submitted on behalf of a third-party: [David Alexander]
1. Submitted on behalf of a third-party: David Alexander

See merge request !2861

Add instructions for pushing tags as well as branches

Current instructions will push the svn branches but not tags  - add missing line to tags


See merge request !2778

Does not create a Todo when commenting on commit or project snippet

Closes #13733

See merge request !2964

Fix order in Gemfile.lock

See merge request !2969

[ci skip]

This is only needed when calling the "expire_cache" method as the other
expiration methods don't depend on Git data.

Closes #13764

Sidebar overlaps content when screen is below 1200px.

When screen is below 1200px, the sidebar overlaps.
When screen is above 1200px, the sidebar pushes content out.
z-index change to make sure hamburger stays on top.
Fixes #12717 
![screensize](/uploads/9a21fa06d583a49d6ebbf1ada34c6792/screensize.gif)

![screensize-small](/uploads/7c25f46e962248a40840562a01c83f8f/screensize-small.gif)

Also sorry I couldn't get the collapse button in the screen cap. It's there. 


See merge request !2620