all but closeGripperNB
closeGripper for group crashes
gripper functions for CLinkbotI and CLinkbotIGroup
Merge remote-tracking branch 'alex/f/gripperGroup' into develop

Conflicts:
	chmobot_src/chlinkboti.chf
	chmobot_src/chmoboti_chdl.cpp
	include/linkbot.h
	include/mobot.h
	src/mobotgroup++.cpp
Got rid of merge conflicts