Please cherry-pick:

Please cherry-pick:
- added methods to controller to expand activity type for admin and user respectivly
- renamed user-registration-event method to have "User" in it as this is explicity for users
- renamed user-logout-event observer method to have "Event" as suffix
- fixed template, no user here (copy-paste mistake)
- also add new event to controller's list
- added missing i18n strings for user activity log
- added missing navigation rule

Signed-off-by: Roland Häder <roland@mxchange.org>