avoid call to getDocument with random string as item

static/js/utils.js

@@ -1654,6 +1654,11 @@ pandora.getItem = function(state, str, callback) {
             }
         });
     } else if (state.type == 'documents') {
+        if (!pandora.isBase26(str)) {
+            state.item = '';
+            callback();
+            return
+        }
         pandora.api.getDocument({
             id: str,
             // send keys so that subsequent request when parsing
@@ -1702,6 +1707,10 @@ pandora.getItem = function(state, str, callback) {
     }
 };
 
+pandora.isBase26 = function(value) {
+    return  /^[A-Z]+$/.test(value)
+};
+
 pandora.getItemFind = function(find) {
     var itemFind = '';
     Ox.forEach(find.conditions, function(condition) {