Added lacking translation (svenfuchs#671)

added a lacking translation subota to day_names

Bosnian (bs)

Author: mahayash315

rails/locale/bs.yml

@@ -37,6 +37,7 @@ bs:
     - srijeda
     - četvrtak
     - petak
+    - subota
     formats:
       default: "%d.%m.%Y."
       long: "%e. %B %Y."