title: Remove security settings and reset layout and insert options on all items in Sitecore?
body: <p>I have a Sitecore 6.5 project, where I have upgraded all the content from an earlier version. But something seems to have gone wrong in the upgrade process, which has caused all items to have a security setting of <code>extranet\everyone</code> which have <code>deny read</code> access, even though that is not the case. Also the layout and insert options needs to get reset and taken the values from the templates standard values.</p>
  
  <p>I could do this manually in the Sitecore UI, but that would take quite some time, as there is 3000+ items.</p>
  
  <p>Is there any way I can patch this with a quickfix of some sort?</p>