Adaptive meshing window for vector fields

[stvdwtt]

The code doesn't work properly if one of the refinement criterion fields is a vector field. We need to generalize adaptiveRefineCriterion() in refine.cc for vector fields.

See: https://www.dealii.org/8.4.0/doxygen/deal.II/classFEValuesBase.html#a396f1430dd3f5716a9fe6ef2762edb5d