title: isntalling a gem (active admin) and running a generator makes some changes to my application that breakes it
body: <p>I HAD a working rails 3.2.13 application. <br/></p>
  
  <p>Then i tried to install ActiveAdmin. <br/></p>
  
  <p>The current version is the 0.6. <br/></p>
  
  <p>After the installation, following the steps in the ActiveAdmin site (<a href="http://www.activeadmin.info/documentation.html" rel="nofollow">http://www.activeadmin.info/documentation.html</a>), trying to access the root of my site (so NOT the active admin realm) i get:</p>
  
  <pre><code>Routing Error 
  
  uninitialized constant DashboardController
  
  Try running rake routes ...
  </code></pre>
  
  <p>So far so good because this is a known bug that i solved turning back to active admin 0.5.1.</p>
  
  <p>Still remains another problem in the root:<br/></p>
  
  <pre><code>Sprockets::FileNotFound in Home#index
  
  Showing /home/agostinox/Projects/mybeautifulapp/app/views/layouts/application.html.erb where line #10 raised:
  
  couldn't find file 'jquery-ui'
    (in /home/agostinox/.rvm/gems/ruby-2.0.0-p0/gems/activeadmin-0.5.1/app/assets/javascripts/active_admin/base.js:2)
  </code></pre>
  
  <p>So: when i access my root page (and NOT the active admin stuff) it tries to find jquery-ui in the gems registered for active admin. <br/>
  Why does this happen and how can i solve this?</p>