title: Use default module's action helpers in another module with Zend Framework
body: <p>I think I've tried everything I've found to solve this, including all the answers here on SO. </p>
  
  <p>In my project there is an <code>admin</code> module, and then there's the default module. Now I want the admin module to use the default module's helpers. Preferably only if there isn't an admin module helper with the same name. Is this possible?</p>
  
  <p>The error message I get is:</p>
  
  <blockquote>
    <p>Message: Plugin by name 'HeadBase' was not found in the registry; used
    paths: Admin_View_Helper_:
    /application/modules/admin/views\helpers/
    Zend_View_Helper_: Zend/View/Helper/</p>
  </blockquote>
  
  <p>I use ZF 1.11</p>