NanoUI updates.

* Simplified the code used in ui_interact procs and updated all current uses.
* Removed ununused jsviews JavaScript code (replaced it with vanilla jsrender).
* Added a message to the UI which shows if JavaScript is disabled (people with JavaScript disabled previously got blank UIs).

Conflicts:
	code/game/objects/items/devices/PDA/PDA.dm
	code/game/objects/items/devices/uplinks.dm
	code/modules/reagents/Chemistry-Machinery.dm
	nano/css/shared.css