Selected instances are not deleted with pagination

Added get_full_url() method to get the absolute url
with the marker object required for pagination and
used it in form action with POST call on terminate
instance.
Overridden the get_full_url() method to encode the url
for ContainersTable and ObjectsTable classes which
inherits the DataTable class.

Change-Id: Idcf09e2e42bdfcbe8eb6d9f554d653fd7143bf8c
Closes-Bug: #1287093
Disables the clear text password UI by default

The old way of assigning passwords in clear text to instances has been
superseded by the nova get-password feature. A corresponding UI
feature has been recently included in Horizon (see blueprint
"decrypt-and-display-vm-generated-password").

This commit disables the visualization of the old password UI by default.

Change-Id: Ia9a8b5c1c398054fb3d726b93f7fecc332b02efe
Closes-bug: #1291006
Merge "Disables the clear text password UI by default"
Merge "Selected instances are not deleted with pagination"