UBL cleanup, optimization#6152

Merged

thinkyhead merged 2 commits intoMarlinFirmware:RCBugFixfrom

thinkyhead:rc_cleanup_6150_etc

Mar 30, 2017

Commits on Mar 29, 2017

Tweak "can not" => "can't" in RUMBA pins
thinkyhead
committed

Commits on Mar 30, 2017

Various UBL cleanups and bug fixes
thinkyhead
committed