use temporary attachments directory in unit attachment test
fix inconsistent image filename extensions (#9638)
Resourcified issue statuses.
User forms cleanup.
Resourcified trackers.
Strings as html safe.
before_validation_on_create callback removed in Rails 3.1.
attachment: add missing diff type at functional tests (#2371, #9612)
remove trailing white-spaces from config/locales/bg.yml
Bulgarian translation updated by Ivan Cenov (#9615)
