gmoccapy_merge changes of 2.6 to 2.7

ver. 1.3.2
- fixed a small bug PAUSE button did not get active on M01
  Thanks to Rick (LAIR82) for pointing on it.

ver. 1.3.1
- fixed very serious bug PAUSE / RESUME / STOP issue
  Program jumped to strange positions if STOP has been pressed
  while PAUSE was active.
  Thanks to Mael (papaours) for finding it.

ver. 1.3.0.1
- corrected a bug, toolchange velocity hal pin have not been
  initialized with values, if the user worked with the
  default values, so a probing with vel = 0 was possible,
  resulting in an error
- corrected an error in notifications.py, as the text to be
  displayed has not been checked for correct pango format, a
  message like "vel <= 0" resulted in an error. Now the necessary
  check is done

Signed-off-by: Norbert Schechner <nieson@web.de>
Merge commit 'origin/2.6' into 2.7

All conflicts were resolved by taking the 2.7 side of the file,
since the gmoccapy release_notes stated that the same changes had
been made manually on the 2.7 side already

Conflicts:
	src/emc/usr_intf/gmoccapy/gmoccapy.glade
	src/emc/usr_intf/gmoccapy/gmoccapy.py
	src/emc/usr_intf/gmoccapy/release_notes.txt
Merge branch '2.7'