Format HACKING as markdown.
Rename HACKING to clarify that it is a markdown document.
Document how to run pgtap tests.
Set up pgtap extension in create_test_db.sh.
Move ISRC editing to the Edit recording form
Fixing the test
IE6 hacks are not worth keeping around
Fix CSS mistakes
Very basic in-browser-only LESS support
LESS + manifests: compile $manifest.less to $manifest.css, have manifest contain only $manifest.css
LESS: rename files for LESS compilation
LESS: move to using a package.json and local lessc
MBS-5310: Do not show <tag-list>s in <relation> nodes
MBS-5310: Do not show <alias-list>s in <relation> nodes
Merge branch 'master' into mbs-5868-edit-isrc

Conflicts:
	t/lib/t/MusicBrainz/Server/Controller/Recording/AddISRC.pm
MBS-5868: move identifier-set editing to a new role, make namings more consistent
MBS-5868: fix tests
MBS-5868: improve names, fix copyrights
MBS-5868: improve verbosity of tests
MBS-6401: Restore ordering of release group artwork