send up ephemeral bit when authenticating with primary-issued assertion as...

send up ephemeral bit when authenticating with primary-issued assertion as well as when authenticating with a password

resources/static/shared/network.js

@@ -121,7 +121,8 @@ BrowserID.Network = (function() {
         url: "/wsapi/auth_with_assertion",
         data: {
           email: email,
-          assertion: assertion
+          assertion: assertion,
+          ephemeral: !storage.usersComputer.confirmed(email)
         },
         success: handleAuthenticationResponse.curry("assertion", onComplete, onFailure),
         error: onFailure