Be more resilient in the case of missing omniauth settings

Should no longer freak out when omniauth settings aren't present in
gitlab.yml. People who aren't using it shouldn't even have to put a
'false' entry in their config for it (and probably wouldn't, after an
upgrade).

Project hooks API

specs DRY up

Update votes for issues and merge requests

Conflicts:
	Gemfile.lock
	app/helpers/application_helper.rb
	app/views/devise/sessions/new.html.erb
	db/schema.rb

tree view need use ascii-8bit, file name need be utf8.

don't load commit logs when viewing blob

FIX: Empty string in commit message

Cucumber => Spinach

API errors refactoring

Fix haml template error for ldap login.

fixed commit title when commit message is an empty string and ensured that link_to_gfm helper doesn't break on nil body

Reduce the amount of JavaScript written in views