When node gets drained while in state mixed display its status as
draining  in sinfo output.
Update code for the new fairshare algorithm.
Remove vestigial code that was removed in commit cdf679d0
Update documentation about accounting without the CR_ALLOCATE_FULL_SOCKET
option.
Merge remote-tracking branch 'origin/slurm-14.11'

Conflicts:
	src/plugins/priority/multifactor/fair_tree.c