Redirect to the proper tab on creating vol/snap

Automatically redirect user to snapshot
tab when creating an snapshot from volume
and redirecting to volumes tab when creating
volume from snapshot

Change-Id: I097383a470be9727c93f61efcf1dfe0359613413
Closes-Bug: #1288304
Changed message when there are no IP available addresses

When trying to associate a floating IP with an instance, when
there are no more availables, the error message was changed.

Change-Id: I46a9c5ec14eea4ac27cb7f717a9e81506c808d8d
Closes-Bug: #1294042
working to allow port creation and deletion on the project level
WORK IN PROGRESS: only allow port owner to delete
Create/delete network port on project level