Merged r9770 from trunk.
Updates for 2.0.2 release.
Merged r9768 from trunk.
Fixed that wiki start page can't be changed (#11085).
Rails CVE-2012-2660.
Merged r9759 to r9764.
Makes users optional in GET /groups/:id (#8981).
Upgrade to Rails 3.2.5 (#11084).
Rails 3.2.5 compatibility.
Test failure due to a regression in Rails 3.2.5.