Remove node select/deselect and edge select/deselect commands and combine them into
network select and network deselect.  Also added network get and network
set current.

Change-Id: Icfa91de6c1e5d26162d2abe23530818c4fb96b60
Remove some unneeded imports

Change-Id: I0af7b0efe363a690483b6b61d54d06bdeb53cc14