Add short polling
Fix short polling
More complicated insertion

Checks for .menu-notification-body's existence, then appends it if
necessary
Merge branch 'feature/avatar' into feature/push-notifications

So notifications work.

Conflicts:
	database/index.php
	discuss/index.php
	include/discuss/topic_body.php
	include/functions.php
	js/script.js
	myaccount.php
	notifications.php
	src/js/script.js
Start work on SSEs, fix short polling

Sadly, SSEs don't work yet. :(
Add EventSource library, fix stuff

DON'T UPLOAD TO TESTING SITE; IT WILL BLOW UP THE SERVER.
Added `from` parameter to login.php. "login.php?from=index.php" redirects to index.php instead of mysettings.php.
Added `from` parameter to logout.php.

As with the previous commit, logout.php?from=discuss redirects to /discuss instead of the former default (index.php).
2.0.3

Contains urgent font fix.
Rounded tiles
Announcements
Sticky header + minor tweaks
Database tables
Big update

Add desktop notifications, notification preferences, jquery cookie
plugin, XSS protection
Style settings
Fixed header width problem.
Add inline popup notifier, styling+backend fixes
Only display thin fonts on high DPI screens
Remove rounded tiles
Themizer homepage fixes