set .cube to position:relative, refs #181
Merge pull request #188 from RemoteStorage/relative-cube

set .cube to position:relative
remove obsolete line in cube positioning style
darken error icon to better distinguish from standard state
move widget CSS from doc to assets

Conflicts:

	doc/style/widget.css
slightly brighten info text to make it more readable
recompiled assets.js
Merge branch 'master' into gh-pages
build: Thu Jan 17 14:04:53 UTC 2013
added note to BaseClient#storeFile about possible file size constraints
Merge branch 'master' into gh-pages
doc build: Thu Jan 17 14:07:17 UTC 2013