sface-0.1-17

Setting tag sface-0.1-17
new user management screen to allow users to be added and deleted from slices
known issue with the users screen regarding adding people who are listed as PIs to a sliver.
reordered columns (new order is hostname, boot state, membership state)
rewrote filtering mechanism to allow separate string search and boot state filter
selection highlights the whole line instead of excluding the hostname part