AmpSlice Help File (flucoma#81)

* griddify help file

* in progress work for explaining thresholds and curves

* update bpatchers for providing linkage to sites

* update ampslice to be more friendly and clear

* add margin to link helper bpatchers (so they display correctly on load)

* update help file to accomodate bpatcher changes

* make text box way longer than it needs to be.

* update cosmetics

* update with review advice

* update learn subpatchers

* shuffle cosmetics