adding reference to noConflict'ed jQuery

I've got a few simple, standalone extensions for prototyping kicking around that normally wouldn't use jQuery, but could benefit from some better config UI in a panel if debugtoolbar is installed. For example, live reload of pages based on assets/template changes, switching themes, etc. could be done in-browser vs in config. Critically, cookie stuff would be handy to not have to reinvent every time i wanted to reuse this pattern.

currently, I am loading my own copy of jQuery, but it would be great to have access to the one used in `fldt` for panel-specific controls. this pull just exposes jQuery as `fldt.$`. I am sure there are other, more interesting ways to go about it, but this seemed like the simplest.

thanks for the great tool!