title: pycharm code autocomplete does not work for python console with ipython
body: <p>autocomplete works in the edit window, but does not work in the python console, which has <code>Ipython</code> environment.
  However, when I run <code>ipython</code> in the terminal window, <code>Ipython</code> comes up and autocomplete works.</p>
  
  <p>I am using Pycharm Community version 4.0.6 under windows. 
  Someone suggest the autocomplete key binding is ctrl-space, however, i found that in edit window, TAB works for autocompleting. </p>