title: Doctrine2 migrations migrate down and migrate from browser and not command line
body: <p>I am using Doctrine2 migrations. I need some answers about my doubt, I canno find a good solution in documentations</p>
  
  <p>I use:</p>
  
  <pre><code>  doctrine migrations:diff // generate migrations files
    doctrine migrations:migrate // migrates up to new version
  </code></pre>
  
  <ol>
  <li><p>How Can I migrate down? specifying the previous version did not work ( nothing to update it says f.e. doctrine migrations:migrate Version20120211163332 it says </p>
  
  <pre><code>Migrating up to Version20120211163332 from 20120309112058
  
  [Doctrine\DBAL\Migrations\MigrationException]  
  Could not find any migrations to execute.      
  </code></pre>
  
  <p>But it's not up it should be down! you can see also on versions in response</p></li>
  <li><p>If I have to make some DB update, is it possible to add some SQL Queries in additions ( alter some datas related to other) ?  I have not tried still since the down is not working :((</p></li>
  <li><p>Is there any way to use the migrate command in a browser nutshell ? I have sw in a shared  hosting without console access so I need this feature, instead of copying queries one by one :D in phpMyAdmin</p></li>
  </ol>