Upgrade admin gem to 1.1.6 and cleanup templates

* Upgrade gem to 1.1.6 [Changelog](https://github.com/alphagov/govuk_admin_template/blob/master/CHANGELOG.md)
  * Fixes asset pipeline for Rails 4 apps — crown icon will display on preview/production now
  * Upgrade Bootstrap to 3.2
  * Upgrade jQuery to 1.11.1
* Add app title
* Cleanup table styles and markup

![screen shot 2014-10-24 at 16 34 33](https://cloud.githubusercontent.com/assets/319055/4771912/4c4d68d8-5b93-11e4-9d59-6426d358bbed.png)