A friendly reminder: please add all new translatable messages to the source and commit them to Gerrit as early as possible, so that translators will get a chance to translate them before betas are released.
In the world or Wikimedia / translatewiki localization we strongly believe that releasing translatable strings as early as possible makes the whole process of translating and testing much more efficient and prevents bugs such as
https://bugzilla.wikimedia.org/show_bug.cgi?id=72607