Contributor License Agreement (CLA) for translators.

[danielramosg]

At this moment the AUTHORS file is complete and all the translators are listed. We also have their emails (not in this repository).

I have contacted almost all of them in the last months to verify the accuracy of the information and to announce them that we would need to release the translations under a CC license.

I can contact all of them again and ask them to accept a CLA (Contributor License Agreement) so that they release the translation under a CC BY 4.0 International License.

• Should I just write a short text and ask them to print-sign-scan-send it?
• Should it be written by our lawyer?
• Do we even need their signature or it is just fine to notify them by email and ask if they agree?