Make labels in Network Topology translatable

Fix the button and object labels in the network topology pop ups to be
translatable and concatenation-free.  Use "None" as the not found value to be
consistent with the network ports detail screen.  This patch excludes
fixing the status values.

Partial-Bug: #1323599
Change-Id: Ia0c92842703109401d758d5ac3ccefab9ccf6971
Merge "Make labels in Network Topology translatable"