Removed tuple implementation and used wrapper instead

src/amdis/Assembler.hpp

src/amdis/FiniteElementSpaces.hpp

src/amdis/GridFunctionOperator.hpp

src/amdis/LocalAssemblerBase.hpp

src/amdis/LocalAssemblerList.hpp

src/amdis/LocalOperator.hpp

src/amdis/gridfunctions/AnalyticGridFunction.hpp

src/amdis/gridfunctions/DOFVectorView.hpp

src/amdis/gridfunctions/DerivativeGridFunction.hpp

src/amdis/gridfunctions/FunctorGridFunction.hpp

src/amdis/utility/Tuple.hpp

test/CMakeLists.txt

test/TupleTest.cpp