title: PRISM module app.config configuration settings
body: <p>We have the beginnings of a modular wpf application built using prism.</p>
  
  <p>We want to allow for each module to have specific configuration - app settings / connection strings etc. </p>
  
  <p>We've currently got things working by specifying all configuration in the shell project as a short term fix. Clearly this breaks the modular approach we are looking for - can anyone point me in the right direction?</p>
  
  <p>Thanks.</p>