! Fixed news header not being style. This is because $context['random_news_line'] was only filled in after the CSS was parsed at all... (index.css)

* Various CSS tweaks: don't set border-radius if $radius is set to 0. Put the proper text color in #wedge, rather than #content. Some margin and alignment hacks, too. (index.css)
- Reverted most of the changes from 422595b (January 8) with the session-based cache. The first implementation lasted a couple of days until I saw its limits. The second implementation lasted a month before it started to show bugs. I spent a day on it, couldn't fix much of it, decided, what the hell, it was only 5% faster. Maybe there will be a third implementation, but I wouldn't count on it too much. Stick to file-based caching, it's still the most consistently stable and efficient cache system for Wedge. Even my work on a database-based cache was too disappointing to further explore. (Load.php, ManageServer.php, Subs-Cache.php, ManageSettings.english.php)
* I believe it's the first time I'm using a lambda function to emulate cache_put_data... Well, it shows you how it's done! (Subs-Boards.php)

* 6 lines into 1. That's better. For my OCD at least. (Subs-Cache.php)
+ Added notifications for Thought likes. (Like.php, Notifications.php, notifiers/Likes.php, Notifications.template.php, Notifications.english.php, script.js)

@ Seriously, 6 files and lots of code just for a tweak to the Post Like code...? It seems like overkill to me, but I've been unable to find a cleaner way to do it. Meh...