add some info to chat view refs #115
Support Desktop notification on Firefox 22 refs #117
remove extra console.og refs #117
Remove ondisplay refs #117

It is deprecated on W3C Notification API,
and we doesn't use it.
Merge pull request #118 from codefirst/id/117

Support Desktop notification on Firefox 22 refs #117
prepare room infomation in room model refs #115
Merge pull request #116 from shimomura1004/id/115

add some info to chat view refs #115