[Ivan Diaz] - Rename utils folder to lib folder, delete unnecessary requires

src/app/main/main-layout-header.js

@@ -1,7 +1,7 @@
 import React              from 'react/addons';
 import Button             from 'core-components/button';
 import CommonActions      from 'actions/common-actions';
-import i18n               from 'utils/i18n';
+import i18n               from 'lib/i18n';
 
 var MainLayoutHeader = React.createClass({
 

src/app/main/main-layout.js

@@ -1,10 +1,7 @@
 import React              from 'react/addons';
-import {RouteHandler}     from 'react-router';
 
 import MainHeader         from 'app/main/main-layout-header';
 import MainFooter         from 'app/main/main-layout-footer';
-import {TransitionMotion, spring} from 'react-motion';
-import RouteTransition from 'utils/route-transition';
 
 var MainLayout = React.createClass({
 

src/core-components/button.js

@@ -2,7 +2,7 @@ import React              from 'react/addons';
 import classNames         from 'classnames';
 import {History}          from 'react-router';
 
-import callback           from 'utils/callback';
+import callback           from 'lib/callback';
 
 var Button = React.createClass({
 

src/core-components/form.js

@@ -2,7 +2,7 @@ import React              from 'react/addons';
 import _                  from 'lodash';
 
 import Input              from 'core-components/input';
-import {reactDFS, renderChildrenWithProps}  from 'utils/react-dfs';
+import {reactDFS, renderChildrenWithProps}  from 'lib/react-dfs';
 
 var Form = React.createClass({