Relocate tag wrangling CSS
Move statistics styles out of sandbox
Move form modes out of sandbox
Issue 3383: Challenges: Empty white box on sign-up form
Merge branch 'master' of git://github.com/otwcode/otwarchive into isue_3383
Issue 2619: Add prompt to Unposted claim blurbs
Counting unique unwrangled tag uses

There are a lot of whitespace changes too, because I'm a bit compulsive about spacing standards, but the main actual change is a bunch of .uniq for the unwrangled by_type counts.
3605 Cache JavaScript files as one
3628 Sub Tags trees not properly nested
3828 Redundant headings on assignment page
3628 Trees should be inside the same li as the tag that spawns them
Merge branch 'refs/heads/master' into issue-2272-wrangling-home-counts

Conflicts:
	app/views/tag_wranglers/show.html.erb
3640 remove Ruby odd/even classing and use CSS
3640 Fix tag wrangling test
2776 with initial state of skin's Advanced fieldset's Show/Hide button not matching state of fieldset
Fix tab spacing and add translation strings
3264 with icons overlapping headers in some instances
Issue 3209 making favicon transparent
Merge branch 'refs/heads/master' into issue-2272-wrangling-home-counts
Merge branch 'refs/heads/master' into issue-2272-wrangling-home-counts