Remove Behind The Wire and "custom" blocks
Separated base functions into time and io, others still required.
renamed code_duino folder to arduino
Updated Arduino app to include Arduino code generation.
renamed code.js to arduino.js, leaving the commit isolated for git to be able to easily identify rename.
Update to Arduino generators for arduino specific functions:
  Added all time related functions.
  Removed some of the Behind the Wire pin renaming.
  Removed servo functions, this will be added in the future as part of an "arduino libraries" update.
  Updated depreciated function calls.
Update to the "Arduino" app:
  Removed generators for js, python and dard.
  Added Arduino specif js block generators
  Change javascript namespace to the name of this app (from "code", the old app name)
Merge branch 'ardublockly-original'