Added test for the FlowdockService.

* dont allow protect/unprotect branches for users without master permissions
* dont allow access to Repository api for guests

Also, is_admin and can_create_group are exposed in the user information.
Fixed attributes_for_keys to process properly keys with boolean values (since false.present? is false).

GITLAB-1283 (GITLAB-869)

Change-Id: I611e7e93f6292de08e1edc8d3ea77cf9087b6ded

Conflicts:
	config/initializers/1_settings.rb

fixed a test a broke in the configurable theme PR
Change-Id: Id894506941bc01ab0d259d48ca7ff9b80bb2c57e

Change-Id: Ifd77615b3b92d7d8bca92b8875aa8204356cfd85

-when logging in if users are allowed to login with just usernames in ldap we will update uid of the user if their uid is out of date

Conflicts:
	spec/lib/auth_spec.rb

Change-Id: Ia171b3d5133da86edc18c0d08ecfaf6a174f2574

GITLAB-1262

Change-Id: I690cb8ea294df53ebe8405a519c23c501af2c21a

Conflicts:
	app/models/user.rb
	config/initializers/1_settings.rb
	spec/models/user_spec.rb

Fixes #5144 Refs #4996

Trigger notification service when new user-group relation was created

-calling build_user will now apply defaults and only override them if as: :admin is set

Change-Id: Id1d938c0967752ecc14370af54f2d88128d18c44

-API now respects default_projects_limit, default_can_create_group, and default_can_create_team

Change-Id: I059d060d576df1050e5371e707381c5e8c608a7a

Change-Id: I966bfd0ccc4b05925384ecab8c6cbe3c6ba3b667

Change-Id: I305266fe9acbbb5136adeeb52e7e4e1d6629a30a

-Specifying a header of SUDO or adding a :sudo with either user id, or username of the user will set the current_user to be that user if your identifying private_token/PRIVATE_TOKEN is an administrator token