MultiType Vector/Matrix and some tests added

CMakeLists.txt

dune/amdis/FileWriter.hpp

dune/amdis/Mesh.hpp

dune/amdis/assembler/FirstOrderTestPartialTrial.hpp

dune/amdis/assembler/ZeroOrderTestvecTrialvec.hpp

dune/amdis/common/CMakeLists.txt

dune/amdis/common/Concepts.hpp

dune/amdis/common/FieldMatVec.hpp

dune/amdis/common/FieldTraits.hpp

dune/amdis/common/Mpl.hpp

dune/amdis/common/MultiTypeMatrix.hpp

dune/amdis/common/MultiTypeVector.hpp

dune/amdis/common/TypeDefs.hpp

dune/amdis/common/Utility.hpp

dune/amdis/io/FileWriterInterface.hpp

dune/amdis/linear_algebra/DOFVectorBase.hpp

dune/amdis/linear_algebra/Mtl.hpp

dune/amdis/operations/Basic.hpp

dune/amdis/utility/MultiIndex.hpp

dune/amdis/utility/RangeType.hpp