remove unnecessary uniqs
revert
fixes #1136 (and a few other cases)
adds basic support for user level-dependent classes
adds missing updaters

to forum posts, comments, and artist versions
adds support for user level-dependent classes

all links to users should have their class attribute set to that user's
level_class
Merge branch 'master' of github.com:r888888888/danbooru
add cached tag xml dump
fixes #739
should fix #165
revert reltag sorting to relevance
adds placeholder text to quick search
fixes #1144
Merge branch 'master' of github.com:r888888888/danbooru
add more quick searches

comments, notes, and users
Merge branch 'testing'

Conflicts:
	app/views/artists/_quick_search.html.erb
	app/views/pools/_quick_search.html.erb
	app/views/tags/_quick_search.html.erb
	app/views/wiki_pages/_quick_search.html.erb
fix ids in quick searches again
fixes #1011
only 1 post count tags are marked
fixes #1152