Shortcuts for slot constructor from functors were added and tested.
	modified:   prototype/Signals-test/src/Test.cpp
	modified:   prototype/Signals/src/signals/ObjectTypes.h
	modified:   prototype/Signals/src/signals/Signature.h
	modified:   prototype/Signals/src/signals/SlotShortcuts.h
	modified:   prototype/Signals/src/signals/TemplateHelpers.h
Assign test was added.