title: How to translate model names in rails for error messages in locale yml file?
body: <p>I want to translate the name of the model in the rails auto-generated error messages.</p>
  
  <p>I get the following view error in my rails application when I try to create a new account for a user.</p>
  
  <pre><code>AccountSmall is not valid
  </code></pre>
  
  <p>This is correct, because the name for a new account should be present.</p>
  
  <p>How can I now translate the <code>AccountSmall</code> name via my yml locale?</p>
  
  <p>I tried this with no luck:</p>
  
  <pre><code>de:
    # ...
    activerecord:
      models:
        AccountSmall: "Konto"
  </code></pre>
  
  <p>Many thanks in advance!</p>