Update opencart.sql

Ukrainian region names fixes.
Fix for bug since OC 1.4 with "Kharkiv Kherson" as single region.
Region codes in ISO 3166
Merge pull request #2038 from stalker780/patch-2

Update opencart.sql
modification update
modification update. added more vqmod features.

also added a unique code feature for uploaded xml
Merge branch 'master' of https://github.com/opencart/opencart

Conflicts:
	upload/install/opencart.sql
quick mod fix