This completes r1517629 for one missing "country". Though not independent, and so (I guess) not in http://www.iso.org/iso/home/standards/country_codes/country_names_and_code_elements.htm the Isle of Man exists as an entity https://www.iso.org/obp/ui/#iso:code:3166:IM.  It can be crossed coming from other systems, so here it is added (not as part of Great Britain (GBR), like for instance Guernsey and Jersey)

I wonder about the codes of the other parts of GBR. They don't exist in 3166. But they were already in GeoData.xml before the Apache era. Anyway they can't hurt and are not a problem, so far...

This also adds 3166 links to CountryCodeData.xml

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1517947 13f79535-47bb-0310-9956-ffa450edef68