I just wanted to let you know that the global development team has made some updates to the DHIS2 translation server now at (http://translate.dhis2.net). Unfortunately, we needed to completely rebuild the server from scratch, so everyone who had created an account there, and wants to use the translation server again, will need to create a new account. Apologies for this.
We have a team working on the Arabic translations now, but if there are other languages out there which you would like to contribute to, let me know and I will assist with getting everything setup for you. You can read more about how to localize DHIS2 in the documentation.