the admin_divisions.code column needs to be longer than 6 characters
Merge pull request #13 from brightjobs/fix_admin_divisions

The admin_divisions.code column needs to be longer than 6 characters.
don't try to insert timezones header row
Merge pull request #14 from brightjobs/no_timezone_header

Skip first line when inserting time zones.
fix for alternate_names table with mysql strict mode
skip header row for language_codes
let geonames_names.elevation be null (for mysql strict mode)
country area nullable
more countries fixes