title: jquery select2 howto make dont close after select
body: <ol>
  <li><p>When using "Multi-Value Select Boxes" <a href="http://ivaynberg.github.io/select2/" rel="noreferrer">http://ivaynberg.github.io/select2/</a>
  slect box drop back after each selection. 
  Is there the way not to do it, so user can select few of it without extra click to select box?</p></li>
  <li><p>Also interested in group options. In demo url above, "Pasific Time Zone", "Mountain Time Zone" not clickable. How to make it clickable and autoselect child items?</p></li>
  </ol>