Merge pull request #106 from caouecs/develop

(de) Fix
Merge pull request #110 from caouecs/develop

(bs) Add bosnian
Merge pull request #113 from caouecs/develop

(ru) Fix mistake in translation of message for `exists` validation rule to…
Update validation.php

additional translate for thai.
Merge pull request #115 from chotikarn/patch-1

(th) Array elements