Fix CSS
Set a title
Include Ubuntu font. Fix line height with italic.
Fix list creation.

Stop using WysiHTML5 command for creating unordered lists. It's implementation adds divs which are incompatible with our use of WysiHTML5.
(CSS) Don't wrap breadcrumb text.
Add 'report bug' button
Improve Rich Text Editor.

- Update WysiHTML5.
- Avoid unnecessary updates to rich text editor.
- Display warning when rich text editor inserts strange tags.
- Make sure rich text editor remains focused after toolbar action.