MBS-4376, preliminary xmlhttprequest cover art uploads.
Upgrade jQuery to 1.7.2.
MBS-4376, improve error handling of image uploads and set position correctly in add cover art edits.
MBS-4376, sort cover art types in Data::CoverArtType.
MBS-4376, add up/down buttons to reorder images in the multiple file upload.
Merge branch 'master' into mbs-4376

* master: (1291 commits)
  Ignore bad values for 'resource' attributes in HTML5 tests
  "about" is not a valid HTML5 attribute, but we still use it for RDFa.  For now, ignore the invalid html5 error messages from the validator about this.
  Update translations from transifex.
  MBS-5535, rename clean_text to collapse_whitespace.
  Valid HTML5 fixes, replace nbsp with numeric entity reference in common-macros.tt, display_age_ago.
  Valid HTML5 fixes to stastistics pages.
  Update iTunes match/cleanup to use https
  MBS-5523: Add test for JSON WS ?inc=url-rels.
  MBS-5523: Add missing "url" in JSON WS url-rels output.
  Fix the artist credit rendering function, add test
  MBS-4578: change sample to use schema 16 as well
  MBS-4578: update to current beta
  Silence complaints about trailing commas
  Update .pot files
  i18n: N_ functions didn't get re-added to the Makefile, evidently
  MBS-5509: deduplicate cookie generation/refreshing
  MBS-5535, correctly collapse and trim all parts of an artist credit in Edit::Utils::clean_submitted_artist_credits.
  Bump DB_SCHEMA_SEQUENCE from 15 to 16.
  Always render disambiguations as string (never as json null), update json /ws/2 webservice BrowseWorks test.
  Always render disambiguations as string (never as json null) and include them in works (json /ws/2 webservice).
  ...

Conflicts:
	lib/MusicBrainz/Server/Controller/Release.pm
	lib/MusicBrainz/Server/Form/CoverArt.pm
	root/static/scripts/common/MB/utility.js
	root/static/scripts/tests/all.html
MBS-3840, Add glue to make /ws/2/annotation searches available.
MBS-4376, fix typo ("your edits has been ..." -> "your edits have been ...")
MBS-5612, Sort releases correctly when picking release group cover art.
MBS-5616, move "set cover art" from label to h1.
MBS-5610, Move "Set cover art" link to the correct section.
MBS-5612, revert the changes to load_for_release_groups in the previous commit, the previous sort behaviour was correct.
MBS-5607, don't crash when serializing a release group without a primary type for json /ws/2.
MBS-5610, always display "Set cover art" link, remove "Remove release group" link.
MBS-3308, always display "Open edits" link.
Merge remote-tracking branch 'origin/mbs-3840' into beta

* origin/mbs-3840:
  MBS-3840, Add glue to make /ws/2/annotation searches available.
Merge remote-tracking branch 'origin/mbs-5607' into beta

* origin/mbs-5607:
  MBS-5607, don't crash when serializing a release group without a primary type for json /ws/2.
Merge remote-tracking branch 'origin/mbs-3308' into beta

* origin/mbs-3308:
  MBS-3308, always display "Open edits" link.
Merge remote-tracking branch 'origin/mbs-5616' into beta

* origin/mbs-5616:
  MBS-5616, move "set cover art" from label to h1.
Merge remote-tracking branch 'origin/mbs-5610' into beta

* origin/mbs-5610:
  MBS-5610, always display "Set cover art" link, remove "Remove release group" link.
  MBS-5610, Move "Set cover art" link to the correct section.