Fixed a topic desync and eliminates a number of possible race conditions in the caches.
Optimised global.js by swapping out some of the unnecessary jQuery with native javascript code.
Updated jQuery to version 3.1.11
Fixed the CSS on the areyousure and error templates.
Added the ability for admins to delete forums.
Added the ability for admins to edit forums.
Added the Uncategorised Forum for topics with an ID of 0. Possibly for deleted forums in the future?
Added the uncategorised forum visibility switch.
Creating forums now has an anti-CSRF session check. The same is true with the newly implemented forum deletion and modification features.
Cleaned up some of the error code.
