put back the bracket for missing value, to keep the fix sort position
improve speed a bit
color for external resource tab
track the selected facets
a tweak for -notify user projects assigned- email
ajax loading icon while loading result
added rubycritic gem
fix to slowdown on the front page if a feed fails. It is now blacklisted for 1 day - SYSMO-1618
update tags
Merge from SEEK 0.21 mercurial into seek-unstable

Conflicts:
	.hgtags
	Gemfile.lock
Merge branch 'seek-unstable' into vln-merge

Conflicts:
	Gemfile
	Gemfile.lock