STYLE: Clean up geometry and maps

- Add imstk::Mat4f and imstk::Mat4d
- Add imstk::MAX_D and imstk::MIN_D
- Remove 'Map' from GeometryMap functions
- Reorder functions in a consistent manner
- Correct reference returns
- remove unnecessary ismtk:: due to namespace
- rename vertex/triangle/hexadron/tetrahedron composed
methods with their plural form when needed
- follow style rule with return type on a line and
function name on the following one during declaration
- move print() to geometryMap base class and use it in
override functions
- use for each c++11 architecture when possible
- correct wrong iteration in HexahedralMesh::getVolume
- place conditions for return at the top of functions
- declare WeightsArray in TetrahedralMesh instead of
TetraTriangleMap
- Rename findEclosingTetrahedra to findEnclosingTetrahedra
- add override on virtual functions in child classes
- correct test function name in Sandbox