infinite scroll updates #2680

- Created patch for autopager lib.  Included it in make file.
- Added throbber image to biblio infinite scrolling.  Had to rework the load and start callbacks a bit.  jq.autopager was expecting a function here and I wanted an array of functions (the alternative being a giant monolithic function with no single purpose).  I was hoping to be able to set that up in the php function that applies an autopager, but it got ugly fast and I would have needed eval(), so I went with a flag to remove biblio separator bars instead.

On publications: permalink urls, loading gif, and redundant separator clearing all work.  Time to start adding this to views.