mouseover parameter documentation

Having some sort of embedded easily accessible documentation when mousing over parameters would make TD a lot more accessible to newcomers (and to those of us that need to frequently refer to the wiki). It could be something like a tooltip, or an optional panel that shows help for whatever the mouse is over (like Max/MSP and Ableton Live have).

Working on something, the biggest issue is getting the documentation parsed from the wiki for parameters. Stay tuned!