hide "remove rule" when no rule is inserted in firewall policies

[Masco]

hide the "remove rule" row action from the firewall policy if no rule is inserted on it

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/180505

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/180505
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=577fffa279dd18dc7dfc2ef3b15cd6828ad04a60
Submitter: Jenkins
Branch: master

commit 577fffa279dd18dc7dfc2ef3b15cd6828ad04a60
Author: Masco Kaliyamoorthy <email address hidden>
Date: Wed May 6 17:46:47 2015 +0530

    Hide remove rule if no rule inserted in FW policy

    Hide 'remove rule' row action in firewall policies, if no rule is inserted in it.

    Change-Id: I7478f01c062ac20d23b4cfe6c8478d9881a6218c
    Closes-Bug: #1452257