fixed issue where geometries with multiple polygons where rendered incorrectly
some minimal style changes to polylines source
fixed an issue where GMSH wouldn't be found if there was a whitespace in the path
added missing neighbour initialisation in one of the TemplateLine constructors
removed accidentally added whiteline again
[NL] Typo in doxygen parameter.
[AL] Forward additional args for local assembly.
[AL] Overloaded SerialExecutor::execute().

The overloaded version takes a third argument. This argument is used
needed properties in the local assembler.
[AL] Overloaded VectorMatrixAssembler::operator().

The overloaded version has a parameter for data needed by the local assembly process.
[AL] Add SimpleAssembler used for shape matrix initialization.

No local vectors/matrices and no modification of global vector/matrix.
[MGTL] Fix calculation of search length.

In case of aquidistant meshes the expression sum_of_sqr - (sum*sum)/edge_cnt can
get negative due to numerical calculation.  The root of a negative value is not
computable in real numbers.
[MGTL] Added class MeshNodesToPoints.

It is used for conversion of mesh nodes to geometric points required for
visualization.
[MGTL] Add assertion in MeshNodesAlongPolyline().
[ML] Decrease Lis solver default tolerance.

This resolves issues for to high tolerance when applied to matrices with penalty terms from Dirichlet BC.
[ML] Using Eigen notation in GloablDenseMatrix.

Using rows() and cols() instead of getNRows() and getNCols().
[ML] Add FP_T and IDX_T typedefs for LisMatrix
[ML] Comment out matrix size check in GlobalDenseMatrix::add().
[ML] Comment out matrix size check in LisMatrix::add().
[NumLib] Set shape matrices explicitly to zero.

This fixes some tests that are using the Eigen matrices.
[NumLib] Tests: Ensure zero entries in matrices.