Minor refactoring of elastic indexer worker



See merge request !210

Improve weight filter for issues

Adds options: Any, No weight and Everything.

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/274

See merge request !172

Commit status now requires developer role

cc/ @ayufan 

See merge request !224

Fix incorrect git_hook API docs

Docs did not match the actual API.

See merge request !225

# Conflicts:
#	app/views/shared/issuable/_sidebar.html.haml

[ci skip]

Issue sidebar collapsed hidden helper class

![Screen_Shot_2016-02-25_at_10.44.16](/uploads/dae0f74a69b191387b7e2d3c4785fb3b/Screen_Shot_2016-02-25_at_10.44.16.png)

See merge request !222

Update LDAP group links asynchronously



See merge request !190

[ci skip]

Fix adding pages domain to projects in groups

cc @rymai 

See merge request !211

Grammar and wording improvements

Improve the grammar and wording of the fast-forward merge and
rebase-before-merge documentation.

See merge request !204

CE upstream



See merge request !208