added twist utilities to flip the order of edge DOFs

src/amdis/functions/GlobalIdSet.hpp

src/amdis/linearalgebra/istl/Communication.hpp

src/amdis/linearalgebra/mtl/ITL_Solver.hpp

src/amdis/linearalgebra/mtl/UmfpackRunner.hpp

src/amdis/utility/CMakeLists.txt

src/amdis/utility/Twist.hpp

test/ISTLCommTest.cpp