Added a 'clearProject' function to the ApiManager, which removes all groups (and layers) from a project.
Added a 'clearProject' function to the ApiManager, which removes all groups (and layers) from a project.

c-martinez/csWeb,TNOCS/csWeb,TNOCS/csWeb,indodutch/csWeb,indodutch/csWeb,c-martinez/csWeb,TNOCS/csWeb,indodutch/csWeb,c-martinez/csWeb