New widget layout with image from the organization and new banner or wide widget layout

The widget now has two layouts: wide and default which is narrow.
To get the wide or banner widget you have to add the widget_type parameter in the URL with the value wide. (?widget_type=wide).

![screen shot 2014-09-02 at 03 49 56](https://cloud.githubusercontent.com/assets/732015/4268898/9eaff8e0-3cb5-11e4-9b93-0f2f369738a2.png)

![screen shot 2014-09-02 at 03 49 43](https://cloud.githubusercontent.com/assets/732015/4268899/a0daf958-3cb5-11e4-8487-29a3ea0bbcf4.png)

Also, a scroll bar was added to correctly visualize the resources.