Update CodeMirror to 5.19.0 and rename jade to pug

public/vendor/codemirror/addon/hint/javascript-hint.js

@@ -97,6 +97,15 @@
   var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
                   "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");
 
+  function forAllProps(obj, callback) {
+    if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {
+      for (var name in obj) callback(name)
+    } else {
+      for (var o = obj; o; o = Object.getPrototypeOf(o))
+        Object.getOwnPropertyNames(o).forEach(callback)
+    }
+  }
+
   function getCompletions(token, context, keywords, options) {
     var found = [], start = token.string, global = options && options.globalScope || window;
     function maybeAdd(str) {
@@ -106,7 +115,7 @@
       if (typeof obj == "string") forEach(stringProps, maybeAdd);
       else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
       else if (obj instanceof Function) forEach(funcProps, maybeAdd);
-      for (var name in obj) maybeAdd(name);
+      forAllProps(obj, maybeAdd)
     }
 
     if (context && context.length) {