Merge branch 'grc' of http://gnuradio.org/git/jblum into master

Merge branch 'grc' of gnuradio.org/git/jblum into master

* 'grc' of http://gnuradio.org/git/jblum:
  fixed issue where entry boxes lost focus (mishandling of hide changing)
  fixed bool converter in forms to work with non bool options
  tweaked key handling callbacks
  fix for uniformity convention with gtk signal name strings
  Simply Actions module imports, using module prefix.
  Reworked actions api and actions objects:
  Move key press extraction logic into actions module.
  rename variable, use keysyms in props dialog
  use the keymap's translate_keyboard_state, use the key value rather than name
  ignore irrelevant modifiers and events pending
  properties dialog with ok/cancel buttons