Improved edit file ui

* remove ugly borders
* replace small buttons with tabs
* add spinner while diff is loading

Ability to upload avatar when create new group

Before this change you dont know you can upload avatar for group until you visit group edit page.

After this change you are able to upload avatar during group creation

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

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

Grammar fixes

fixed typos in groups messages

Dev setup on metal

Cloud com

Deploy key in multiple projects

Add doc on adding a deploy key easily to multiple projects through the API.

Small ui improvements

* fix ugly errors block when admin save invalid user
* fix ugly errors when you tries to save invalid wiki page

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

Improve Milestome UI

Milestone UI header was different from Issue/MR pages but use same UI elements.
This MR fixes it so UI looks same for issue/mr/milestone

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

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

Fix install guide

Fix gitlab setup. DB setup must go after gitlab-shell setup. Because in seeds we need `/home/git/repositories` to exist

Rebuild Postgres indexes after a MySQL conversion

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

Ubuntu 14 needs recent ruby patch

Ruby version updated so it doesn't have the readline bug https://www.ruby-lang.org/en/news/2014/05/09/ruby-2-0-0-p481-is-released/.

Added Cloud 66 to third party one-click installers

Version 6.9.0.rc1

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

Clean up *.log.1 files during 6.6-to-6.7 upgrade