Allow download translations

Hello,

Each Bible translation is about 3-5 MB of data, and we can not add to one app all translations.

My feature request is:
we add to SAB field: for put url with list of translations on this url we prepare list of translations, e.g.:

[
   {
      "books" : [
         {
            "description" : {
               "default" : "Some descripition"
            },
            "id" : "rst",
            "size" : "3670016 (size in bytes or just string)",
            "title" : {
               "default" : "Synodal",
               "ru" : "Синодальный",
               "zz" : "some other"
            },
            "url" : "https://.../rst.zip",
            "version" : "1.4"
         },
         {
            "id" : "nrt",
            "title" : {
               "default" : "New Russian",
               "ru" : "Новый русский перевод",
               "zz" : "some other"
            },
            "url" : "https://.../nrt.zip",
            "version" : "1.2"
         }
      ],
      "id" : "ru",
      "title" : {
         "default" : "Russian",
         "ru" : "Русский"
      }
   },
   {
      "books" : [
         {
            "id" : "kjv",
            "title" : {
               "default" : "King James Version"
            },
            "url" : "https://.../kjv.zip",
            "version" : "1.0"
         }
      ],
      "id" : "en",
      "title" : {
         "default" : "English",
         "ru" : "Английский"
      }
   }
]

As result user can self choose translation for uses, and we decrease size of app.
If we add version of text, then if not same in app we can ask user for update.