Launch Instance button does not open the corresponding workflow on network topology page

[Lucas Palm]

Steps to Reproduce:
1. Ensure that the Angular Launch Instance workflow is enabled in your local_settings.py file.
LAUNCH_INSTANCE_NG_ENABLED = True

2. Go to Project-->Network-->Network Topology tab.

3. Click on the "Launch Instance" button and view that the result is just "Loading..." when instead the angular launch instance workflow should show up.

View the attached image for more detail.

Note: The error only occurs when using the new angular launch instance workflow. The old legacy workflow works just fine.

The following errors are emitted to the browser console:

Uncaught TypeError: Cannot read property 'modal' of null
    $document.on.horizon.modals._request.$.ajax.complete

Uncaught TypeError: Cannot read property 'get' of undefined
Uncaught TypeError: Cannot read property 'get' of undefined

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/222426

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/222426
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=e458f60d6fd1044919e764c58d0769b246d76572
Submitter: Jenkins
Branch: master

commit e458f60d6fd1044919e764c58d0769b246d76572
Author: Justin Pomeroy <email address hidden>
Date: Thu Sep 10 19:58:21 2015 -0500

    Fix ng Launch Instance button in Network Topology

    This cleans up the anchor tag on the Network Topology page that is
    used to open the angular Launch Instance modal. Basically it adds
    the href to make it accessible, removes the ajax-modal class so the
    modal opens properly, and removes the dismissUrl since dismissing
    the modal should leave the user where they are.

    Closes-Bug: #1494503
    Change-Id: Ia6caf8fd4f0eceedf3046125780a3e013eacf0f1