This is complicated and we may abandon it after discussion. There are several goals here:
the existing template is too complicated with the two_sessions thing, requiring a bunch of classes for mutualEvent etc. I'd like to have the declaration of the sessions in a single place. This might be accomplished without the other pieces.
I've never been happy with the mobile display, showing parallel sessions vertically with the same time on the left. This uses a carousel type display on the same level so that people could more easily choose which track to go to. As a consequence, there is no limit on the number of parallel sessions. This is a tradeoff we should discuss.
The program does not work on IE, but it also didn't work for Crypto (IE doesn't support padStart in javascript).
We should test this on safari. It's quite smooth in firefox on android.
The CSS of the slide show could possibly be improved.
This is complicated and we may abandon it after discussion. There are several goals here: