slideshow_image is grouped.  Some views updates.  #1331 #1497

slideshow_image gets an og_group_ref.  Added spaces_current_space filter to the view.

@jmburnz, I made a couple of your requested changes.  Headline comes before body and both are wrapped in a div.  Let me know if it needs a class.  Haven't truncated either since I'm not sure what an appropriate length would be.
Borrowed manual list's javascript for making remove links in box.  #1331
Merge branch 'SCHOLAR-3.x' of github.com:openscholar/openscholar into SCHOLAR-3.x