title: Map Alt-j to <Esc><j> in IdeaVim
body: <p>I am now really used to send escape to Vim in my terminals using the Alt(Meta) key + a movement (like 'j'). Using any "Vim plugin" in IDEs becomes a pain, because they usually do not forward the alt keypress to the emulator plugin.<br/>
  For example, I cannot obtain this behavior in IdeaVim.</p>
  
  <p>I tried to <code>:map &lt;A-j&gt; &lt;Esc&gt;&lt;j&gt;</code>, and also to edit the keymaps for IdeaVim in File->Settings without any success.</p>
  
  <p>Does someone know if this is possible ?</p>