Added check for img to 'Visitor goes directly to a catalog pid user loads image' test
Moved tufts_images partial show view to new location
Merge remote-tracking branch 'origin/master'
Added some image methods  to application helper, from https://github.com/mkorcy/tdl_hydra_head/ @ 1b12eb5ebb1052b30e1db75dd4b13bc568c2700f. Also removed .text from OM metadata objects that are now Strings