Backported IDN validation fixes from ZF2
Test for #19, Fixes #19
Zend_Validate_Hostname - updated IDN list according to the http://www.iana.org/domains/root/db
Zend_Validate_Hostname - updated TLD list to the version 2014112800
Test for #451, Fixes #451
Merge pull request #468 from mhujer/zend-validate-hostname

5Zend_Validate_Hostname] Improvements and fixes