Fixed logic in CapabilityList from_obj and from_dict methods
Added missing @staticmethod decorators
Fixed some typos in from_obj of CapabilityObjective class
Fixed typos in from_obj and from_dict of CapabilityObjective
Fixed a few typos in from_obj method of Capability class
Fixed wrong class being called in buildChildren of CapabilityObjectiveType
Fixed wrong class being called in buildChildren of CapabilityObjectiveType