removed makeXXXPtr removed and factory functions restructured

src/amdis/GridFunctionOperator.hpp

src/amdis/LocalAssembler.hpp

src/amdis/LocalOperator.hpp

src/amdis/assembler/ConvectionDiffusionOperator.hpp

src/amdis/common/Utility.hpp

src/amdis/linear_algebra/DOFMatrixBase.inc.hpp

src/amdis/linear_algebra/DOFVectorBase.inc.hpp