title: How to disable autosave feature on IDEA?
body: <p>env: IDEA-14.0.2, kubuntu14.10 x64</p>
  
  <p>Yesterday I use IDEA to learn source from Spark. When discussing with my partner, I write serval lines directly to the source, then I closed the IDEA without ctrl+S</p>
  
  <p>Today when I open the project I found that those little changes still exist and make the source very dirty (and bit hard to remove them since they are everywhere). I assume that there's a autosave feature the avoid close without saving by incident.</p>
  
  <p>how to close that on certain project? or do it globally?</p>