Merge pull request #207 from franckstauffer/plugins

[NEW] Preliminary support for 3rd party plugin certification
Add AuthenticationManager and login event
Rename module Rbs_Users in Rbs_User
Rename module Rbs_Users in Rbs_User
Fix travis autoload
Fix travis autoload
Merge pull request #208 from inthause/documents

Add AuthenticationManager and login event, rename plugin module Rbs_Users
Add EventsCapableTrait and refactor event configuration
Merge pull request #209 from inthause/documents

Add EventsCapableTrait and refactor event configuration
renamed i18n to I18n