Partially revert "Enable `forin` and `freeze` rules."

This reverts commit df5aa2c722.

Conflicts:
	js/.jshintrc

js/.jshintrc

@@ -4,7 +4,6 @@
   "devel"   : true,
   "eqeqeq"  : true,
   "expr"    : true,
-  "forin"   : true,
   "freeze"  : true,
   "latedef" : true,
   "nonbsp"  : true,

js/push.js

@@ -175,7 +175,6 @@
     if (transitionFromObj.transition) {
       activeObj = extendWithDom(activeObj, '.content', activeDom.cloneNode(true));
       for (key in bars) {
-        if (bars.hasOwnProperty(key)) {
         barElement = document.querySelector(bars[key]);
         if (activeObj[key]) {
           swapContent(activeObj[key], barElement);
@@ -184,7 +183,6 @@
         }
       }
     }
-    }
 
     swapContent(
       (activeObj.contents || activeDom).cloneNode(true),
@@ -208,10 +206,8 @@
     options.container = options.container || options.transition ? document.querySelector('.content') : document.body;
 
     for (key in bars) {
-      if (bars.hasOwnProperty(key)) {
       options[key] = options[key] || document.querySelector(bars[key]);
     }
-    }
 
     if (xhr && xhr.readyState < 4) {
       xhr.onreadystatechange = noop;
@@ -271,7 +267,6 @@
 
     if (options.transition) {
       for (key in bars) {
-        if (bars.hasOwnProperty(key)) {
         barElement = document.querySelector(bars[key]);
         if (data[key]) {
           swapContent(data[key], barElement);
@@ -280,7 +275,6 @@
         }
       }
     }
-    }
 
     swapContent(data.contents, options.container, options.transition, function () {
       cacheReplace({
@@ -414,10 +408,8 @@
     var result = {};
 
     for (i in obj) {
-      if (obj.hasOwnProperty(i)) {
       result[i] = obj[i];
     }
-    }
 
     Object.keys(bars).forEach(function (key) {
       var el = dom.querySelector(bars[key]);