new qualityMeasuresJacobian.h/cpp files for computing Jacobian-based validity...

new qualityMeasuresJacobian.h/cpp files for computing Jacobian-based validity and qualities. Validity moved from AnalyseCurvedMesh (see next commit). New: Scaled Jacobian (for hexes and quads). Remains to move the anisotropy quality measure from metricbasis.