a8n/web: Campaign detail view is not updated after adding changeset to manual Campaign

Created by: mrnugget

Steps to reproduce:

1. Create manual campaign
2. Add changeset

Expected behavior:

Changeset is added to Campaign and displayed in the list of Changesets.

Actual behavior:

Spinner shows up but changeset does not show up in list of Changesets.

Page needs to be reloaded for changeset to show up.