Document that the isVisibleToAll flag is not preserved on group import
Document that the isVisibleToAll flag is not preserved on group import

Change-Id: Ib872cdbdf56eb8479c0b9a4254951614acf79620
Signed-off-by: Edwin Kempin <b444e279ad95fdef4fbdd82c813b624595df204a@sap.com>

GerritCodeReview/plugins_importer,GerritCodeReview/plugins_importer,GerritCodeReview/plugins_importer,GerritCodeReview/plugins_importer