Allow continuing when hitting a DB sync error in rb-site.

Review Request #5646 — Created March 17, 2014 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
0842c69...

Reviewers

A problem people sometimes hit is forgetting to create the Review Board
database or setting the right permissions before they proceed with
rb-site install. This can lead to a failure when synchronizing the
database, and then the need to delete the site directory and start over.

We now present a helpful error with the ability to continue and try
again as many times as needed.

Entered a fake database and got the error. I was able to continue to try
again.

Entered valid info and it worked.