[Sahara] Fixed job execution update for deleted row

Raise Http404 to have row deleted from the table.

Change-Id: Ifcbf6deac4f7f66b54d139d6487b0b668f1a26fc
Closes-Bug: #1395931
Change arrow transparent borders to inset borders

In Firefox on Linux the workflow arrows appear to have stepped edges,
simply changing the top and bottom transparent borders to inset borders
causes the arrows to have smooth edges in all browsers.

Change-Id: I55829ec6199eebd650adaa17f5b057a42198bf01
Closes-Bug: 1373010
Provide tenant_id in Neutron create requests

Include the tenant_id explicitly in the Neutron object creation
requests rather than assuming that all of the information can
be derived from Keystone. This fixes deployments that only pass
tokens to Neutron.

Closes-Bug: #1400418
Change-Id: I10d50c202c7fd156455a97c6a5451225154ae0bc
Merge "Change arrow transparent borders to inset borders"
Merge "[Sahara] Fixed job execution update for deleted row"
Merge "Provide tenant_id in Neutron create requests"
Merge branch 'master' of https://github.com/openstack/horizon