Create resources files for B2G 1.4

This lets us generate apps for version 1.4.

I've added a script to create complete_permissions.json from PermissionsTable.jsm. I'd be happy to cook up something similar for messages.json if you point me in the right direction. As it stands, I just copied that file across from the resources for version 1.3.
looks good, can you bump this to 0.5 since it's a bigger change?