Added button Add Interface on Network Topology tab

On the Network Topology tab, when a router is selected a new
button was added to allow it connect with different networks.
This change was made following the most simple mechanism that
I could find, please check if it is the correct behavior.

Change-Id: Ia08c5f22e3237fc4e90767a8becfe6413d754b04
Closes-Bug: #1288779
Fix Updated At label

Change the column labels on the Compute, Cinder, and Network system
info panels to Last Updated from Updated At.

Closes-Bug: #1324625
Change-Id: Ic69c63c39a9743184f3a9cfdc7fe9e9b97bc7e97
Merge "Fix Updated At label"
Merge "Added button Add Interface on Network Topology tab"