Add url for message number
Support #msg1 style issue links

If this url hash is encountered, activate that message instead of the
last message.  Also, highlight it differently so that it stands out.
Redirect even if hash in url
Move url logic from model to components
Merge branch 'master' into commentlinks

Conflicts:
	background.js
Merge pull request #52 from quisquous/commentlinks

Make comments linkable