Init Fixes and WP8 config.xml removal

Some minor initialize fixes: it will now return something back if
called more than once. And fixed an issue with a receiver on Android
that was causing an app to crash that didn’t even call initialize.

Removed WP8 references from config.xml since they were breaking the
PhoneGap Build submission.

This should be the last update going directly to master. Future
releases will stay in test for a week or two