metadata: also read .fdroid.txt metadata
This is documented as working here: https://f-droid.org/docs/Building_Applications/ (second to last paragraph)
fixes #364
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This is documented as working here: https://f-droid.org/docs/Building_Applications/ (second to last paragraph)
fixes #364