First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs)

/*
 * Auto-completing page/username fields
 * NOTE: A more efficient version of the username field is used for Mozilla browsers. The updated code is in autofill.js.
 */

//
// **** 1.1.4: DEPRECATED ****
// Replaced with Spry-based mechanism.
//