Use a shell script for creating the OTA zip
- The gradle task breaks on updating the android plugin to 2.2.0, so let's just use a shell script to make things easier maintenance wise.
Fixes https://gitlab.com/fdroid/privileged-extension/issues/25
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes https://gitlab.com/fdroid/privileged-extension/issues/25