"Search in this collection" does not work in IllUrk side collections

[NTsch]

The search looks inside the currently selected collection, but the charters in those collections are empty placeholders, so no result is returned.

[GVogeler]

This is less a bug than a bad consequence of a (bad) design decision: The "virtual" documents in a collection are all empty as they are are "hooked-in" charters references through the @source attribute in cei:text. A full text search in collection containing this kind of charters could probably only work, if we trigger in the Exist/Lucene backend that a copy would be stored for all hooked-in charters under the id of the current collection when they are changed. We could remedy this maybe only with a warning to the "search in sub collection" field, e.g. "Attention, this collection contains charters that are maintained in other collections. The search will exclude all these charters."