Ubuntu Discourse logo
Added Ubuntu theme modifications.

Signed-off-by: Marco Ceppi <marco@ceppi.net>
Improve ubuntu theme
Reset back to original value to avoid conflicts
Updated to match better with Discourse themeing and Ubuntu branding
Font fixes, corner cases, better visitibilty
Added new logo
Make sure titles are cut off
Make sure ubuntu.css gets compiled
Override body-page with proper font-family
Fix similar-topics css
Some topic text is really too long
Fix loading text not showing white