Squashed commit of the following:

commit 728df4ad4df0bd097d925174f10188b7edbf4fc0
Author: richo <richo@psych0tik.net>
Date:   Wed Mar 27 09:14:06 2013 +1100

    WIP! include hashes on events for signature validation

commit 01c69b6103e90d80dd861aefd2d9b2e102cdff50
Author: richo <richo@psych0tik.net>
Date:   Wed Mar 27 03:56:27 2013 +1100

    Light up hashes in response to signature data
Show signature status in the UI
Send signature status to the client properly
Use good/bad colours from bootstrap