Notification Page

[pongstylin]

Before introducing more notifications, we need a page that will provide a history of notifications. The reason for this is so that we never annoy players by popping up multiple notifications on their screen. If there are multiple types of notifications, then we say so and link them to the notifications page. The notification page should also keep track of the most recently seen notification.

In a follow-up ticket, we'll make the notification page accessible from any page on the site via an icon button - similar to Facebook.

Here's a quick list of notification types that will be implemented in follow-up tickets.

1. Your Turn: Already implemented. Sent when not actively looking at this game as it becomes the player's turn.
2. You Win! / You Lose!: Sent when not actively looking at this game as the game ends.
3. New Message: Only in-game chat is supported right now, so only sent when not actively looking at the game in which the message was sent.