Checkmk Werk 11800: Avoid escaping in custom host attributes

ID: 11800 Title: Avoid escaping in custom host attributes Component: Setup Level: 1 Class: Bug fix Version: 2.1.0i1 In case custom host attributes where containing special characters (e.g. "&"), they where stored escaped on disk and therfore also displayed escaped in the GUI. This fix is applied during <tt>omd update</tt>, so no manual interaction is needed when updating to this patchlevel.