title: Highlight to select and Middle-button to paste in jupyter notebook?
body: <p>In Jupyter Notebook, when I highlight text either from within a cell in the notebook or from outside the notebook, Middle-Button click doesn't paste anything as it is supposed to do in many other applications in linux. Is there any setting that would allow one to be able to paste with a Middle-Button click into an Ipython or Jupyter Notebook? </p>
  
  <p>I'm using the notebook in firefox if that matters.</p>