First implementation of "two line" formatting.
Messages have a title and optional content.
Distinguishing writing on "your talk page" from another talk page in messages.
Change-Id: I9051e4bfb66d1c25c1bf68ec092b52fd90544336
* Instead of creating a new div, replaced the content of EVERY SINGLE DIV ON THE PAGE when a user had no notifications.
* Added some styling to make title and link prettier.
Change-Id: Id713ca56abc2f58ed1d580f3e43efa3c46d76c2a
Add a title and a link to Special:Notifications to the notifications overlay.
Also add a message to Special:Notifications and the overlay if a user has no notifications
Change-Id: I28407d3ea82039b160170f51ab987418e14be2af
