Bug fix on neutron's API to return the correct target ID

In the class FloatingIpManager, the function filters the
resulting list of ports with all available floating ips.
The function now returns the target ID of a port with a
floating IP associated to it. Added a new function to get
this to pass. In the next phase is to refactor the
floating ip api to allow a finer granularity. This will
be useful later for managing floating ips.

Change-Id: I02286dbbb60318b0157992622ffdeeae45a71bc1
Closes-Bug: 1265872
Move volume snapshots table to volumes panel

Now that instance snapshots are just images, the images & snapshots
page only has images and volume snapshots. This is an odd combination.
I think we should now move volume snapshots to the volumes panel,
since a volume snapshot is tied to a volume.

Closes-Bug: #1190843
Change-Id: I3e12cec8b859a30db9f131e9889a92277e064086
Merge "Bug fix on neutron's API to return the correct target ID"
Merge "Move volume snapshots table to volumes panel"