improve opengraph tests
i18n update

* Updated el_GR, fa_IR, hu, it_IT, pt_PT, ru_RU, tr_TK and zh_CN
* Added Malay
Changed Korean language code in file name
Added alternate Hungarian language code as well
point licensing submodule to 'master' branch
multisite licenses changes, move logic to license manager on a per-plugin basis
Merge pull request #1015 from dannyvankooten/feature/network-licenses

multisite licenses changes, move logic to license manager on a per-plugi...
License Manager update.
Bumped version to 1.5.2.7.