Removed tree rendering

Implemented: blueprint nailgun-rest-tree-rendering

Change-Id: I3823fe8f668a044b91e1cad645c08973143cab97
Fixed UI for nailgun-rest-tree-rendering

Change-Id: Ie943026a69acfb2cfe0996d43179e641a6e67f77
Merge "Removed tree rendering"
Merge "Fixed UI for nailgun-rest-tree-rendering"