Bug997547 correspondence of reviews

https://bugzilla.mozilla.org/show_bug.cgi?id=997547
discussed this right now with @arcturus and @azasypkin, we'd like to change this and have:

* "websms/sms" (for compatibility) and "websms/number" when we want to send a number
* "websms/email" when we want to send an email

does that make sense?