add Croatian to the menu

website/templates/_make.html

@@ -79,6 +79,7 @@
                 <option value="bg">Bulgarian</option>
                 <option value="ca">Catalan</option>
                 <option value="zh-cn">Chinese</option>
+                <option value="hr">Croatian / Hrvatski</option>
                 <option value="cz">Czech</option>
                 <option value="da">Danish</option>
                 <option value="nl">Dutch</option>