moved files to match new name

dune-gdt.pc.in

dune/CMakeLists.txt

dune/Makefile.am

dune/detailed/CMakeLists.txt

dune/detailed/Makefile.am

dune/gdt/CMakeLists.txt

dune/gdt/Makefile.am

dune/gdt/assembler/Makefile.am

dune/gdt/assembler/local/Makefile.am

dune/gdt/assembler/local/codim0.hh

dune/gdt/assembler/local/codim1.hh

dune/gdt/assembler/system.hh

dune/gdt/basefunctionset/Makefile.am

dune/gdt/basefunctionset/fem-localfunctions.hh

dune/gdt/basefunctionset/fem.hh

dune/gdt/basefunctionset/interface.hh

dune/gdt/discretefunction/Makefile.am

dune/gdt/discretefunction/default.hh

dune/gdt/discretefunction/local.hh

dune/gdt/exists.hh