[gui] Loginseitenverschönerung
[test] less deprecation warnings
[db] fixed migrations
[rails4] project parameters whitelisted
[rails4] secret_key_base
[test][bugfix] project/create returns created project
[test][bugfix] project does not contain 'previous_build_ids' anymore
[models] Project uses 'builds.where' instead of 'Build.where'
[rails4][worker] removed decrement_open_transactions
[rails4][test] fixed test routes