Make sure you can't select grouping link types in the RE
Don't create empty URL edits in the release editor (client-side half of MBS-7545)
MBS-7543: "Cancel" does not revert instrument changes

Add a .peek() to avoid the computed in bindingHandlers.instrumentSelect
from reevaluating after instruments are changed.
MBS-7532: Ignore pasted MBIDs that don't match the entity type of any selectable link type
Allow seeding URLs without link types again
Acquire a dependency when reading an attribute value, but not when writing
Merge remote-tracking branch 'bitmap/series-fuckups' into hotfix1-2014-05

* bitmap/series-fuckups:
  Acquire a dependency when reading an attribute value, but not when writing
  Allow seeding URLs without link types again
  MBS-7532: Ignore pasted MBIDs that don't match the entity type of any selectable link type
  MBS-7543: "Cancel" does not revert instrument changes
  Don't create empty URL edits in the release editor (client-side half of MBS-7545)
  Make sure you can't select grouping link types in the RE
Merge branch 'hotfix1-2014-05' into beta