Fix missing arg handling in html10n.js

src/static/css/pad/gritter.css

@@ -31,6 +31,8 @@
 .gritter-item .gritter-content {
   flex: 1 auto;
   text-align: center;
+  width: 95%;
+  overflow-wrap: break-word;
 }
 
 .gritter-item .gritter-close {
@@ -48,4 +50,4 @@
     right: 1rem;
     transform: none;
   }
-}
+}

src/static/js/html10n.js

@@ -779,16 +779,16 @@ window.html10n = (function(window, document, undefined) {
   function substArguments(str, args) {
     var reArgs = /\{\{\s*([a-zA-Z\.]+)\s*\}\}/
       , match
-
+    var translations = html10n.translations;
     while (match = reArgs.exec(str)) {
       if (!match || match.length < 2)
         return str // argument key not found
 
       var arg = match[1]
         , sub = ''
-      if (arg in args) {
+      if (args && arg in args) {
         sub = args[arg]
-      } else if (arg in translations) {
+      } else if (translations && arg in translations) {
         sub = translations[arg]
       } else {
         console.warn('Could not find argument {{' + arg + '}}')