Changes

Bug 547478 - No errors in workspace, but error symbol occurs in tree
Fixed comparator to return consistent results
Change-Id: I230baceafa38327f4dd02d51d66d97a386787bd5 Signed-off-by:
Eugen Neufeld <eneufeld@eclipsesource.com>

TCI - Increase memory of NonEPP Runner
Change-Id: Ia9a9d6d4de537e717f29267cbf4110a19c78de82 Signed-off-by:
Eugen Neufeld <eneufeld@eclipsesource.com>

Bug 549634 - View model editor should support opening files from history
The view model editor can now open view models from a history revision. 
If this is the case, the view model is copied to a temporary file to 
allow migration before showing it in the editor. View models opened from
the history are shown as readonly. For this the tree master detail
renderer was adapted to NOT offer drag and drop or a context menu if the
tree is configured as readonly
Also added a RCPTT test testing the opening from history inluding 
migration.
Change-Id: Ifbe35d0e7470fa1d9bbc9de1999f6ca7c9c20092 Signed-off-by:
Lucas Koehler <lkoehler@eclipsesource.com>