MBS-5540: Release editor eats tracklists

After parsing a tracklist and changing an AC, there were issues where
the placeholder attribute on the credit input would return undefined.
Nuke MB.utility.trim and get the artist name differently.
Merge remote-tracking branch 'bitmap/mbs-5540' into beta

* bitmap/mbs-5540:
  MBS-5540: Release editor eats tracklists
Merge branch 'beta' of ssh://git.musicbrainz.org:10015/musicbrainz-server into beta

* 'beta' of ssh://git.musicbrainz.org:10015/musicbrainz-server: (49 commits)
  Try fixing the edit ID conflict a different way
  Revert "Change edit ID number in webservice.sql, conflicting with statistics.sql"
  Change edit ID number in webservice.sql, conflicting with statistics.sql
  Change editor name in webservice.sql, since it seems to be breaking a unique constraint in tests
  MBS-5749: Add edit profile link to 401 error page
  MBS-5702: Tweak link to wikipedia below wikipedia extracts
  MBS-5691: link ISRCs in the artist recording list view
  MBS-5415 revert: missed a spot
  i18n: revert MBS-5415, as it's proven unworkable
  Change to using a directory full of hooks, rather than a single file.
  MBS-4536: Add some cover art to webservice.sql and update tests
  MBS-4536: Fix other webservice tests that were broken
  MBS-4536: Don't output cover-art-archive data in JSON if it's not loaded
  MBS-5651: Fix unescaped quotes in msg* strings.
  MBS-5651: Escape quotes in msg* strings.
  MBS-5651: Run the revised script.
  MBS-5651: Handle the "barcode" link as well.
  MBS-5651: Remove a trailing space in the string cleanup script.
  MBS-5651: Updated *.po with the altered string.
  MBS-5651: Add script to fix changed strings for translators' convenience.
  ...