Use new mobile-codes release and handle shared mcc values country stats.
This addresses bugzilla 998601.

We display an entry for each country (as defined by ISO alpha3 codes)
and note the cases where this leads to duplicated data. For example
Bermuda, Guam and the USA share code 310, Guam and the USA 310 and 311
and the USA also claims 313 and 316.