First step towards using twitter bootstrap.

The basic layout is in place, most of the markup is converted and lots of twitter bootstrap components are in use. Things still look ugly, but it's pretty good for 2.5 hours of work :-)
Small design improvements.
Merge branch 'master' into bootstrap

Conflicts:
	app/views/layouts/application.html.erb
Use navbar as header and made greeter prettier.
Styled header
Styled comments and health check overviews
Class btn for all buttons
Fix date select style
Style step form
Style footer
Readd overall status
Use i18n_tools (can't believe I haven't used it before)
Language dropdown and fixes for phone
Fix breadcrumb URLs (language was missing)
More style fixes for phone
Don't hide admin area
Fix header sizes
Add missing header
Add some width to import CSV text area
Fix autolinks in various places