More tour experiment work.

modified:   app/assets/javascripts/angular/controllers/experiments.js
modified:   app/assets/templates/tour_experiment.html
modified:   public/experiment_assets/bird_tour.json
Merge branch 'master' of https://github.com/QutBioacousticsResearchGroup/bioacoustic-workbench
Work done on Tour Experiment.

modified:   app/assets/javascripts/angular/controllers/experiments.js
modified:   app/assets/templates/tour_experiment.html
modified:   public/experiment_assets/bird_tour.json