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
add Previous link to Admin > Images table

The Glance API supports a sort direction which we can use to paginate back

The Prev href tag contains a marker id of the first item in the table.
When clicked, a GET API call is made, passing in this marker and the sort_dir='asc'
This will return the previous page's data.  Then we have to re-sort the data because
it is ordered backwards.  We use the default sort_key='created_by' for this.

Once the patch #1252649 is restored, we can add the same behavior to Project > Images.

If we are able to get the consistency across the APIs to include the sort_dir, then we can
bring Prev to the other project tables as well.  There are some blueprints to enhance
API capabilities in this area.

Change-Id: I3e7c6a2db595838dbdff595dc8f0fdda288b6bcf
Partial-Bug: #1263142
Partial-Bug: #1282987
Partially-implements: blueprint pagination-add-prev-link
Container:improve 'Copy Object' help description

Modified the sentence as per the triaged hint.

Change-Id: Ic52f689e8bfab7233cbeaad0897c2ee492027ffd
Closes-bug: #1334474
Merge "add Previous link to Admin > Images table"
Merge "Container:improve 'Copy Object' help description"
Merge "Fix Updated At label"
Merge "Added button Add Interface on Network Topology tab"