Merge pull request #658 in ZP/z-push from bugfix/ZP-1352-impersonation-check-read-permissions-on-all-folders-on-foldersync to develop

* commit '339a6a32':
  ZP-1352 Initialize in constructor.
  ZP-1352 Check permissions on each FolderSync and remove add folders on impersonated stores as required.
  ZP-1352 Check permissions on each FolderSync and remove add folders on impersonated stores as required.
  ZP-1352 Don't sync additional folders to impersonated stores.