index/objects.html logic is incorrect, doesn't count non-standard types

[evanwill]

Currently if items don't use one of image;audio;video;pdf;panorama;record;compound_object;multiple then they end up not getting counted and nothing is displayed. This ends up with nothing the box when using custom templates.

Should logic:

• map all "display_template" values, then display count of each template type
• use current logic, but add a final "total objects" count at the bottom