Connecting a circuit termination does not follow return URL

### Environment
* Python version: 3.6.9
* NetBox version: 2.8.7

### Steps to Reproduce
1. Connect a circuit termination to an interface

### Expected Behavior
After completing the connection, the user should be returned to the circuit termination view

### Observed Behavior
The user is directed to the cable view, with no way of navigating directly back to the circuit termination.