* changes:
Convert SuggestChangeReviewers to use PermissionBackend
Reduce visibility of some RefControl methods
Convert update and forceUpdate to PermissionBackend
Convert ListProjects to PermissionBackend
Convert reading project access to use PermissionBackend
Convert ListDashboards to PermissionBackend
Convert parsing projects to use PermissionBackend
Convert ListTasks and TaskCollection to PermissionBackend
Convert ListChildProjects to PermissionBackend
Convert GitOverHttp and Gitweb to PermissionBackend
Convert SuggestParentCandidates to PermissionBackend
Convert administrateServer to PermissionBackend
Check delete change with PermissionBackend