allow use of html in l10n
PR #43 (allow use of html in l10n).

Bootstrap removes underlines from links. Fixed.

3 UI messages, HTML-ised now.
Merge branch 'master' into denis/html-messages

Conflicts:
	lib/l10n.js
Merge pull request #43 from w3c/denis/html-messages

allow use of html in l10n