MBS-1377, Part 1: Split new relationships that have multiple instrument/vocal attributes into separate relationships
mbs-4825: add blogspot cleanup
Merge remote-tracking branch 'bitmap/mbs-1377-ui' into beta

* bitmap/mbs-1377-ui:
  MBS-1377, Part 1: Split new relationships that have multiple instrument/vocal attributes into separate relationships
Merge remote-tracking branch 'reosarevok/mbs-4825-redo' into beta

* reosarevok/mbs-4825-redo:
  mbs-4825: add blogspot cleanup