Fix idle time position when no flag or short flag is used
Reformat ALL CSS to 4 space indenting
Set the background of my messages on the main message element, instead of each individual element
Removed Imgur appid.
Remove AuthenticationMode.
Remove collapsibility.

Fixed #715, #716
Call updateActivity once per user instead of per user per room.
Made changes to do less work in updateActivity.
- Reverted 99db269de87f71fda3a96c80408d365ca5911ca3.
- Check DOM element status for user before updating.
Set idle time only once.
Change timer interval to 1 minute.
Updated the azure script.
Updated to the latest version of SignalR.
Fix up github issue provider styles to correct 404 and round avatars
Merge pull request #762 from cmaish/github-issues-css

Fix up github issue provider style to correct bubble arrow 404 and add avatar rounding
Update README.md
Added db support for notifications.
Added notification support for mentions.
- Fixed notification schema.
- Added notifications when message is sent with mentions.
Don't create a notification if you mention yourself.
Re-add attachments table since it got deleted by mistake.