Added support for preloading javascript libs ($template->preload_js()). Updated admin theme and Tigra Tree Menu to support this + JS_{HEADER,FOOTER} variables.
/*
* 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.
*/
//
// **** 1.1.5: DEPRECATED ****
// Replaced with jQuery-based mechanism.
//