Modified pick_and_place to use designators. Not yet tested, will not work yet
Using  GetObject API (work in process) correctly
Not used GetObject but the simpler GrabMachine in pick_and_place
Merge remote-tracking branch 'origin/refactor/sergio+ed' into use_designators

Conflicts:
	challenge_basic_functionalities/src/challenge_basic_functionalities/pick_and_place.py
Using the new PickUp state
Merge branch 'use_designators' into refactor/sergio+ed
Fixed two typos of Sjoerd in what_did_you_say