DUNE/Casts: Using template in std::vector<> uncastLexical.
DUNE/Tasks: In Parameter, added function to return pointer to AbstractParameterParser.
DUNE/Tasks: In AbstractParameterParser, added virtual function to uncast variable.
DUNE/Tasks: In BasicParameterParser, defining uncast() function.
Merge branch 'feature/uncast_parameter' into feature/maneuver_memento