change glob filter for graphics to not filter out valid IETF RFC5646 locales (fixes #621 and #357)
change glob filter for graphics to not filter out valid IETF RFC5646 locales (fixes #621 and #357)

Also, update the documentation comment to be absolutely clear.

The function used to copy images from any locale directory starting with at least two lowercase letters correctly, but only add those to the app metadata that started with two letters plus one big letter or a "-". The same problem did not exist for adding texts to the metadata.
f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,fdroidtravis/fdroidserver