New translations from Crowdin.com

Please note that this request contains mostly an update of the Dutch translation (100%) and a few Italian translations exported from http://crowdin.net/project/apereo-oae. 

Crowdin added an extra line (#X-Generator: crowdin.net) at the top of each file of the other languages so that's why they are also included. Thus you can either ignore the other languages or (assuming the other translators would also start using Crowdin) include them.