title: Save file in Windows Phone (pdf, csv)
body: <p>I'm trying to find way to save files (pdf or csv) presented in application.<br>
  I want those files be available from outside the app.<br>
  From what I know it is impossible to save file to sdcard, only in isolated storage.<br>
  There is nothing like file manager in Windows Phone, right? 
  Maybe there is possibility to save file to some cloud from app?</p>