GraphViewer: Finished implementation of community joining, display and reverse action to be implemented
GraphViewer: All tests pass
GraphViewer: Added tests for expansion of community-nodes
GraphViewer: Simple expansion of Communities now possible
GraphViewer: Now collapses another community if community is expanded but no space is available
GraphViewer: Added NodeReducer to index.html of WebInterface
GraphViewer: Added test for reshaping if community is formed
Merge branch 'devel' of github.com:triAGENS/ArangoDB into devel