Profiles, re-adds a built-in browser, adds more forum-specific themes, and fixes a ton of stuff

↓ Built-in browser!
↓ Open links in external browsers!
↓ View profiles!
↓ Keep the sidebar open!
↓ Easy-to-find keys for [ = : / ]!
↓ Mildly improved image uploading!
↓ Forum-specific themes: more YOSPOS, some FYAD, and some Gas Chamber!
↓ A few more fixes from the new year's redesign!
↓ Lots of little bugfixes! Parsing! Posting! Setting! Highlighting! iOS 5! Crashing! Feedbacking! Previewing! Greying!