CYB-217 - Enable detailed view & allow videos to be played

https://jira.ets.berkeley.edu/jira/browse/CYB-217
A 'puts' like this should never enter the checked-in code.  If you want it there for your own sake later, at least comment it out.  It does nothing in Apache, only in webrick/thin where you have an actual  terminal attached to the app server.   If you want something in the Rails logs, there are commands for that.  E.g., logger.debug or logger.info or logger.error -- which will show in the logs depending on the error level set.  'error' is the most terse, and 'debug' the most verbose.

Similarly, 'byebug' is even worse in checked-in code, as it will stop execution.