Check_MK Werk 1578: Folding states of containers with umlauts in titles are now persisted

ID: 1578 Title: Folding states of containers with umlauts in titles are now persisted Component: Multisite Level: 1 Class: Bug Fix Version: 1.2.5i7 When a foldable container has umlauts in the title, for example when a view topic has umlauts in it, the folding state was not persisted across page reloads.