mbs-6201: first sql changes for events
Merge branch 'beta' of https://bitbucket.org/metabrainz/musicbrainz-server into mbs-6201

Conflicts:
	admin/sql/CreateTables.sql
mbs-6201: generated stuff for events
mbs-6201: adding more sql bits for events
mbs-6201: adding some basic SQL-related bits as per Ian's comments
mbs-6201: upgrade.sh stuff plus missing generated stuff for doc tables
mbs-6201: add missing quotes
mbs-6201: update GID, add functions to upgrade script
mbs-6201: adding cancelled flag
mbs-6201: adding ratings
Merge branch 'schema-change-2014-q4' of https://bitbucket.org/metabrainz/musicbrainz-server into mbs-6201
mbs-6201: change upgrade script to use .json, fix problems found while upgrading
Merge remote-tracking branch 'reosarevok/mbs-6201' into events
unfuck aclass
mbs-6201: ::Data and ::Entity for PR
mbs-6021: edit-related files
mbs-6201: display-related files
mbs-6201: adding missing UI bits
mbs-6201: fixes suggested during PR (I)
mbs-6201: fix merging