Enhance display of online-only bibs

Enhance display of online-only bibs

On search results:
* Hide "place hold" links for bibs which appear to have TADL
  ezproxy auris.
* Simplify physical description for online-only bibs in search
  results
* Hide format icons for online-only bibs
* Add some padding to result_table_format_cell

On record summary:
* Change auri links to use the css_button class.
* Hide things which only make sense for physical holdings:
  * place hold
  * copy info displays
  * call number browse

Signed-off-by: Jeff Godin <jgodin@tadl.org>