[Layout] Layout rebuilds after resize/reposition about openmct

[akhenry]

Have done some initial investigation. Notes below.

1. The refresh is happening because the drag gesture updates the configuration of the layout object being edited.
2. This change is then persisted (via the EditablePersistenceCapability - which just marks the editable object cache dirty).
3. This has the effect of updating the 'modified' value on the domain object model
4. This triggers a watch in MCTRepresentation which updates the objects capabilities
5. One of those capabilities is the view capability, so $scope['view'] gets set to a list of the views for this object. it seems to be this step that triggers the redraw of all children Don't know enough about what the implication of setting that property of scope is to speculate about why that is yet.
6. One of those capabilities is the composition capability. The layout view uses $scope['composition'] to iterate child objects. This field is refreshed every time anything on the model changes (including configuration). Because the composition capability returns an array of new objects every time, it causes a refresh of all children every time the capability is refreshed.

[akhenry]

Fixed in PR #345

[RCarvalhoNASA]

Testathon 20151207 This behaves much better now, really nice! However, this error still happens when adding a panel to the layout by dragging it in from the tree on the right.

[charlesh88]

Testathon 20151207: Same experience as Robert.