Translations:Translatable modules/Principles/16/en

There needs to be an easy to browse catalog of modules whose messages need to be translated. This is similar to the main page in translatewiki.net. The primary entry point to this must be Translate’s Message group selector. The grouping must be controlled by the wiki editing community. The grouping is needed because a wiki may have hundreds or even thousands of translatable modules, and looking them up in one message group selector is not scalable.