Add rake task to install or upgrade gitlab-shell installation.
Add documentation for new rake task to install gitlab-shell.
Modify release dates for EE and CI

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'update-release-dates' into 'master'

Update release dates
Merge branch 'improve-gitlab-shell-installation' of https://github.com/pkgr/gitlabhq into pkgr-improve-gitlab-shell-installation

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

Conflicts:
	doc/install/installation.md
Fix install docs for gitlab-shell setup rake task

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix gitlab-shell setup rake task

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'pkgr-improve-gitlab-shell-installation'
Merge branch 'master' of dev.gitlab.org:gitlab/gitlabhq
More fixes to gitlab:shell:install

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix 404 on jquery ui images

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Save repository size to projects table

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'fix-404-jquery-ui' into 'master'

Fix 404 jquery ui

Fixes #1211
Merge branch 'repo-size-in-db' into 'master'

Save repository size to projects table

This will allow us to get largest repos by simple sql query.

Also it increase loading of `admin/projects` page a lot because right now it calculate 20x project sizes per page
Add sort dropdown for admin projects page

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'improve-admin-projects-page' into 'master'

Improve admin projects page

Add dropdown for project sorting