Remove obsolete and unused "fixjustification" endpoint
Simplify "gettrackingdata" endpoint
Remove PATCH methods from v2 RESTful API
Simplify return values of v2 RESTful API GET methods
Display navbar in collection editor
Merge branch 'cleanup'

* cleanup:
  Display navbar in collection editor
  Simplify return values of v2 RESTful API GET methods
  Remove PATCH methods from v2 RESTful API
  Simplify "gettrackingdata" endpoint
  Remove obsolete and unused "fixjustification" endpoint