Cache LocalSite membership on requests in the RBFeatureChecker

Review Request #9899 — Created May 1, 2018 and submitted — Latest diff uploaded

Information

Review Board
release-3.0.x
86047e2...

Reviewers

The RBFeatureChecker now caches the results of LocalSite lookups for a
user during a single request so that multiple calls will only result in
a single query.

Ran unit tests.