[BUG] The source description should be given in a different TEI file, or not given. It should not point to the same mei file

[fmacca]

Describe the problem
Right now, certain sources have a link to a source description, that is pointing to the source itself (

EditionExample/content/sources/edirom_source_2b2b26e5-c85d-4edd-8806-fe126ce390a2.xml

Line 33 in bd09c34

<annot type="descLink" plist="xmldb:exist:///db/apps/edirom/edition-example/content/sources/edirom_source_2b2b26e5-c85d-4edd-8806-fe126ce390a2.xml"/>

). This is not correct, as Edirom is expecting a tei file instead. With the old getText.xql endpoint an empty

is displayed by the frontend. The new document endpoint returns an error instead.

It would be correct to not have this descLink annot here, or to have it pointing to an external tei file, as it is done in klarinettenquintett.