Added Auto status request setting, few UI changes.
*  Updated read me file information.
*  Auto refresh can now be done even on RUN state, be ware if Grbl 0.8c
   or older is used, Grbl can start acting erroneous until reset, have
   not seen any issues with Grbl 0.9g.
*  UI changes:
   *  Consolidated Link and Machine setting panels.
   *  Removed all ":" from UIs since this punctuation in these cases
      are redundant, plus UI looks cleaner without them.