Various fixes and improvements.
[discogs_cover_art] Fixed a typo.
[discogs_cover_art] Use OAUTH in order to request images.
Fix Thank You message per MBS-3346
Merge pull request #6 from JesseWeinstein/fix-thank-you-message

Fix Thank You message per MBS-3346
Remove duplicate code
Factor out setting as_auto_editor
Factor out select_form method==POST
Factor out extract_*_mbid
Factor out checking `update` variable and setting only if not already set
Combine 4 repeated lines
Fix missing underscore in internal method added in prev. commit
Fix the *last* missing underscore in internal method added in prev. commit
Merge pull request #7 from JesseWeinstein/various-cleanup

Various cleanup, factoring out duplicate code
Merge remote-tracking branch 'murdos/master'

Conflicts:
	config.py.dist
	editing.py