Task #8887: do momrpc calls in the webservice when tasks are fetched/updated/inserted. renamed some mom related object projecties

Task #8758: merge from branch RA-Task8758 to trunk. svn merge did not work, so I used svn diff on branch and svn patch to trunk. For revision history, see branch.

Task #8574: moved dataservice to datacontroller. added methods to convert lists to id-based dicts, which are then used to link the claims and tasks to the resources for gantt view

Task #8574: Render tasks in grid as tree view. Not optimal for user. Let's change this to a task-type-column.

Task #8574: split controller into two: for dataretreival and gridcontrol. Bind them via service. Use in html.