Scan: added:
  * running?
  * cleaning_up?
Application layout:
  * Updated subnav div to appear only when needed (i.e. when we have subnav sections)
   * Added id attributes to sidebar divs
application.js: added updatePage() to update accordions and container height according to the sidebar
scans.js.coffee: removed call to restoreAccordions() since updatePage() is called from application.js
_charts.html.erb: restoreAccordions() => updatePage()
Removed rogue space
Scan#show.html.erb: update sidebar with id attributes and set to hidden by default
Scan templates: active and inactive templates update to manipulate the visibility of the sidebar and its elements according to scan state