The WOPI discovery response lists its extensions in lower case, and
OpenInApp looks them up with the extension of the file as it is on disk.
So a "report.DOCX" found no app url while a "report.docx" opened, and
the web UI reported that it could not contact the application, which
reads like the editor is down.
The extensions now go into the map in lower case and the lookup folds
the case as well, so both ends match whatever the app publishes. The log
line and the error also name the extension, because neither said which
file type had no app.
Fixesopencloud-eu/opencloud#3449
Nick Walters
bbebdf95ec