fixes issue where first time open of metadata panel was too tall
adds in stanford s and creates a way for asset_urls to be defined
Merge pull request #103 from sul-dlss/add-stanford-s

adds in stanford s and creates a way for asset_urls to be defined
Merge pull request #101 from sul-dlss/initial-height-fix

fixes issue where first time open of metadata panel was too tall
adds in pdfjs package via bower
adds in very basic pdf view proof of concept