Changes:
- LinkAce now includes translations for German and Chinese (Simplified)
- Large update of the source files for the LinkAce setup via Docker (#149)
- Resolves the "Column not found" SQL error on guest views (#151)
- Output of certain error messages was reduced for security reasons (#152)
- Notifications for app backups can now be disabled properly (#155)
- Fixes the import of tags to prevent duplicate tag issues
- Fixes a broken update check for Docker images
- Fixes wrong templates for guest pages
- Minor interface fixes