Auto-registration fail

[jmgasper]

I was testing in dev to register a new project in the Project Management tab, and I ran into an issue where the project was created, but the auto-assignment of webhook, label, and rules failed.

The error that showed was confusing, and it caused me to click Save again, and I ended up with a duplicate project.

What we need to do is:

1. Figure out why the error message showed in the first place and fix that
2. Ensure that the error message is more descriptive and says something like Project created, but adding the webhook, issue labels, and wiki rules failed.
3. Redirect the user back to the project list to see the newly added project so a duplicate isn't added.