start implementing simple undo/redo
start implementing simple undo/redo
Merge branch 'feature/undo' of github.com:open-steam/webarena into feature/undo

Conflicts:
	source/Server/ObjectManager.js
add shortcut for undo
some bug fixes regarding undo
further improvements
show message if other user changed object in-between
cleanup
use Q promises for "defaults"
clean up share point code:
- create module for adapted sharepoint interface
webarena-2472: repaired Sharepoint-Icons
add documentation
remove not needed console.log
clean up share point
start preparing undo for deletion
update rooms if undo - object deletion
undo deletion of objects
undo duplication
Merge branch 'feature/undo' into develop

Conflicts:
	source/Server/ObjectManager.js