CE upstream

See merge request !202

Feature migrate to multiple ldaps

Still needs some documentation.

Basic flow:
- Upgrade to the newest EE
- Change gitlab.yml to include the server hash
- Run `rake gitlab:migrate_ldap_providers`

This will ensure all current ldap groups links will continue working.

See merge request !200

Add a few items to changelog

See merge request !1187

Issue respect single sign on

Fixes #1677 by making sure the per-build user is saved as well. Otherwise the user is passed to devise, and the user is saved afterwards, creating a successful signup.

See merge request !1186

Because devise will trigger a save, allowing unsaved users to login, behaviour had changed.
The current implementation returns a pre-build user, which can be saved without errors.

Reported in #1677

Fix link to githost.io

Documentation pointed to wrong gitlab-ci project.

See merge request !222

Note omnibus in installation

See merge request !1184

Improve locked merge request UI

It allows us easily detect when MR get into lock state

Fixes UI part of #1674

See merge request !1183

Feature multi ldap servers

This adds the missing functions to get multiple LDAP servers to fully function

See merge request !198

This still requires some additional documentation

No red builds policy

Related to gitlab/organization#63

See merge request !1182

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

Conflicts:
	db/schema.rb
	lib/api/ldap.rb

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

Conflicts:
	doc/workflow/README.md

same rendering for note diff as for usual diff

CE upstream

I dont fixed next files:

```
Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both modified:   lib/gitlab/ldap/access.rb
	both modified:   lib/gitlab/ldap/person.rb
	both modified:   spec/lib/gitlab/ldap/access_spec.rb
```

See merge request !197

Changelog: added information about sorting users

See merge request !1175

Notifications documentation

Fixes #1583

See merge request !1177