Added Rhino.Licensing code to ours

(cherry picked from commit 2c10d1787472935c453ccb2f6d0add32c397c5a5)
Removed rhino.licensing from the list of assemblies to merge

(cherry picked from commit be7dccee509f4312631c55d4cb7ec3343ff2d709)
Removed all the code from the licensing that is not required, closes #931 and closes #929

(cherry picked from commit c31efa52a01a87fd46c5d3871378a4868dbdbc61)