v2.0.2

#719 Supplemental Materials Usability Testing
#986 Investigate db:seed rake task
#1012 cache EPUBs
#1065 Update CSB ref point in Gemfile
#1068 prevent empty facets from displaying
#1075 Copyright statements missing in footer [BUG]
#1079 Update Cozy Sun Bear DUPE
#1094 embed code improvements
#1096 Missing Metadata on MP4 Videos
#1097 PSUP: Volumes 1 and 2 should link to each other