The source project of this merge request has been removed.
Draft: Appdata related patches
appdata: use appstreamcli for appdata validation
appstream-util is obsoleted by appstreamcli.
appdata: Update appdata
- Fix screenshot syntax error
- Mark the first screenshot as default
- Mark the developer name as untranslatable
- Add categories and keywords
- Remove one of the purism tags to verify appdata