IVIGIT: added visual point projecter entity.
Added the quaternion among the python operator.
Added the oppoint modifier in the metatask 6d.
Minor modif of Meta task.
Added the point 2d projecter in the python init list.
New python scripts.
Merge branch 'master' of github.com:jrl-umi3218/sot-core

Conflicts:
	src/dynamic_graph/sot/core/__init__.py