Which repository properties to get (there may be more available on some wikis):
- apiurl
- URL to the repository API - helpful for getting image info from the host.
- name
- The key of the repository - used in e.g. $wgForeignFileRepos and imageinfo return values.
- displayname
- The human-readable name of the repository wiki.
- rooturl
- Root URL for image paths.
- local
- Whether that repository is the local one or not.
