MBS-4442: focus just-clicked button in coverart reordering (in both add and reorder pages)
MBS-4442: use $(this)
MBS-4442 (addendum): remove duplication in CoverArt.js
MBS-6612: show a size-limited preview image in the cover art uploader table
MBS-6612: move to left side, amend arrows (at nikki's suggestion)
MBS-6612: console.log cleanup
MBS-6616: Hide comment field while images upload
Merge branch 'mbs-6616' into beta

* mbs-6616:
  MBS-6616: Hide comment field while images upload
Merge branch 'mbs-6612-image-preview' into beta

* mbs-6612-image-preview:
  MBS-6612: console.log cleanup
  MBS-6612: move to left side, amend arrows (at nikki's suggestion)
  MBS-6612: show a size-limited preview image in the cover art uploader table

Conflicts:
	root/static/scripts/edit/MB/CoverArt.js
Merge branch 'mbs-4442' into beta

* mbs-4442:
  MBS-4442 (addendum): remove duplication in CoverArt.js
  MBS-4442: use $(this)
  MBS-4442: focus just-clicked button in coverart reordering (in both add and reorder pages)