Merge commit '25a8' from git@gnuradio.org:jblum

* commit '25a8':
  use clean numbers for waterfall ref and range
  tweaks to scope autoscaling
  registered key to hide/show control panel in wxgui windows
  Added window size param to all wxgui wrappers.
  add canonical options for copy enable param

diff --cc gr-wxgui/src/python/common.py
Simple merge