fix for player scrubbing
collapsable persistent player - #134
utc-indexed date objects (#129)
Merge pull request #180 from chrisrhoden/player_for_air

Resolution for #134 and fix for scrubbers (and #129)
fix for travis specs
upgrade rails for security
fix drag and drop uploading, add choose upload page
fix #177
Fix #155
fix file uploads to existing item
fix handling multiple csv files
more robust background import
solves #175
preview instead of type;
fix #179