Added ability to define "welcome" action & namespace
Better be handled at the controller level (modManagerRequest)
Stick with class parameters...
Removed hard coded "welcome" action
Added system settings to change default action

* origin/pr/11179:
  Removed hard coded "welcome" action
  Stick with class parameters...
  Better be handled at the controller level (modManagerRequest)
  Added ability to define "welcome" action & namespace