添加了登陆，修改密码，注册三个页面的csrf；

添加了usernameCheck的valuedation检测方法;
urls.py 添加了register，change_password页面。

static/src/js/utils/csrf.js

@@ -0,0 +1,16 @@
+define("csrf",function(){
+    function get_cookie(cookie_name) {
+        var name = cookie_name + "=";
+        var ca = document.cookie.split(';');
+        for (var i = 0; i < ca.length; i++) {
+            var c = ca[i];
+            while (c.charAt(0) == ' ') c = c.substring(1);
+            if (c.indexOf(name) != -1) return c.substring(name.length, c.length);
+        }
+        return "";
+    }
+    function csrfHeader(xhr){
+         xhr.setRequestHeader("X-CSRFToken", get_cookie("csrftoken"));
+    }
+    return csrfHeader;
+});

static/src/js/utils/validation.js

@@ -8,7 +8,8 @@ define("validation",
         'validator/date',
         'validator/integer',
         'validator/between',
-        'validator/confirm'],
+        'validator/confirm',
+        'validator/usernameCheck'],
         function () {
 
     });