Add support for importing EasyWorship6 bibles (ewb)
Original Launchpad bug 1695590: https://bugs.launchpad.net/openlp/+bug/1695590
Reported by: tomasgroth (Tomas Groth).
EasyWorship6 uses sqlite3 for its bible files which can fairly easily be read. Adding a bible import should therefore also be fairly easy. A proof of concept script is attached.