Fix saving the verified issue counter when initializing counters.
Review Request #920 - Created Oct. 18, 2017 and updated
When initializing counters for an older review request, we populate the counter for the number of verified issues, but then we don't save it along with the other counters. Unit tests didn't catch this, since the comprehensive set of issue counter tests didn't check for verification state changes. This change fixes that logic and fleshes out the counter tests to make sure that issue status changes are respected. Testing Done: Unit tests pass. The original issue encountered (during debugging of doc building) has been fixed. Reviewed at https://reviews.reviewboard.org/r/9240/