Fixed groupdeletion
Changed from foaf:nick to foaf:name
Added complete subscription and member triples to deletestatement
Fixed way of rejoining
Checked in administration if person is maker of the group
Beautified creategroupAction() and proper template. Set 'memberApi' at deprecated because it should be implemented with semantic pingback
Made up sending pingbacks, writing logs correctly and showing errors correctly
Added group URI to groupprofile.phtml and ascending order of group names
Changed visibility to protected for testing purposes
Added some tests and added/updated required dummyclasses
Merge branch 'Story5_jan' into Story5

Conflicts:
	classes/Xodx/GroupController.php
Merge branch 'Story5_stephan' into Story5
Altered groupController/homeAction so a user from another instance can enter
a groups home-site.
Implemented APIs for joining a group
Added API for leaving a group i.e. unsubscribe from each member and have
each member unsubsrcibe from me