Renamed MappingFE to MappingFEField

Renamed MappingFE to MappingFEField

Fixed documentation.

Fixed indentation.

Inverted DH and VECTOR in template declaration.

Renamed get_fe_mask to get_component_mask

Added entry in changes.h

fixed: destructor, useless lines, commented code. Renamed tests

added missing documentation and solved the thread safe issue

eliminated if statement in compute_shapes_virtual

solved all the problems highlighted in https://github.com/dealii/dealii/pull/727

const quadrature points in update_euler_vector_using_triangulation

Added two test with a non trivial component mask (mapping_fe_field_real_to_unit_q1_mask.cc) and fixed if statement in update_euler_vector_using_triangulation

Added assert dimension in update_euler_vector_using_triangulation

start working on else statement in update_euler

added one test with fe_bernstein (still failing)

Added tests from q1 to q5 and from b1 to b5

Fixed doxygen comments.

Added a few comments and fixed a const reference.

fixed inital guess in transform_real_to_unit

added hyperballboundary in test b2_mask