#1062 registration: fix api call to get subdivision
#1062 registration: fix api call to get subdivision

The API call was crashing when the user sent a wrong country code (XX). We were receiving notification.

Note: we could not identified why the user sent wrong XX country code. We suspect that the user, using the Chrome 42 Android 6.0 (Nexus 5S), has an obsolete javascript engine behaving weirdly.

muccg/rdrf,muccg/rdrf,muccg/rdrf,muccg/rdrf,muccg/rdrf