Database:
  -need to change the interface of the generic Database class so that no direct references
   or pointers to group or entry objects are used:
   1. approach: CEntry e=getEntry( ...by any attrib...); //get a COPY
		e.Title="Blubb";
		setEntey(e);
   2. approach: EntryID id=getEntryID(...by any attrib...); //get an ID (maybe the list index)
		setEntryTitle(id,"Blubb");