Some performance tweaks
datasize fix for op_arg_gbl
permutation by colour
Combined reduction
Bandwidth computations and output
Output formatting
Merge remote branch 'origin/rebased-fortran-backend-and-apps' into rebased-fortran-backend-and-apps

Conflicts:
	op2/c/src/core/op_lib_core.c
	op2/c/src/core/op_rt_support.c
	op2/c/src/mpi/op_mpi_core.c
	op2/fortran/Makefile
	op2/fortran/src/op2_for_declarations.F90
	translator/fortran/python/op2_fortran.py
	translator/fortran/python/op2_gen_cuda.py