[CMake] Fixed submodule init / update on Windows

Tiny fix for wrong behaviour of tool ResetPropertiesInPolygonalRegion

Fix color and import leaks

[FileIO] Gmsh: Respect mesh density scaling factor at stations

The parameter is part of the inteface.

Static string references for MshModel

Cleanup and mem leak fixing

Fixes mem leaks!

Removed method declarations with missing implementation.

Fix the move constructor of ProcessVariable

Fix PETScVector

 * copy returns *this
 * move explicitly deleted