alternative implementation of point in triangle test
added 2nd eps and documentation
[IO] Specify full path in include.
[ML] Specify full path in includes.

Also removed unnecessary includes.
[ML/Tests] Fix warnings in tests.
[GL] Specify full path in includes.
[ML] Make all include paths explicit.
[ML] Include declaration headers first.
Merge pull request #498 from endJunction/FullPathInIncludes

Full path in includes
add VTK2TIN, TIN2VTK
move MeshInformation into MeshLib namespace
add missing include in OGSFileConverter
make MemWatch class being accessible on any platforms, though it does nothing on Windows and Mac.
add a tool checkMesh
fix indentation
Merge pull request #499 from endJunction/FixWarningsInMeshLibTests

Fix warnings in MeshLib tests.
[NL] Add DIM, NPOINTS to all ShapeFunction classes.

The expressions are needed for local assembler matrix sizes.
[NL] Add default ShapeMatrices constructor.
[NL] Add Eigen fixed and dynamic ShapeMatrixPolicy.
[ML] Make elements' dimension a constexpr.

Needed for choosing integration method at compile time.