Merge branch 'di-controllers'

core/Mail.php

core/Period.php

core/Period/Day.php

core/Period/Month.php

core/Period/Range.php

core/Period/Week.php

plugins/CoreAdminHome/Controller.php

plugins/CoreHome/Controller.php

plugins/CorePluginsAdmin/Controller.php

plugins/Ecommerce/Controller.php

plugins/Goals/Controller.php

plugins/MobileMessaging/Controller.php

plugins/MultiSites/Controller.php

plugins/Referrers/Controller.php

plugins/UserCountryMap/Controller.php

plugins/UsersManager/Controller.php

plugins/VisitFrequency/Controller.php

plugins/VisitsSummary/Controller.php