Fix: annotationList and annotationPreview
The annotation list didn't show the source sigla because of an outdated xpath (MEI3 and earlier). This PR provides an update for MEI4 and MEI5-dev. Further the annotation preview was broken because of the source:isSource()
function. It was just checking manuscripts or sources in MEI3 or older. Now it checks also prints and also later versions, e.g. MEI5-dev using a regex.
Note: Since a manuscript requires <manifestation singleton="true"/>
, I added analogously that a print requires <item>
.