webadmin: The labels should be displayed in lexo numeric order

The edit interface(nic) label window, and the tool tip on the name of the
nic in the sub tab network interfaces under hosts had to be fixed.

Change-Id: If25a826a3123b43f87e51537a1988209dda31fa6
Bug-Url: https://bugzilla.redhat.com/1091674
Signed-off-by: Alona Kaplan <alkaplan@redhat.com>
(cherry picked from commit 7abd04b92dca83523372f35839ef139832b66e08)