Various fixes (#19)

* Add basic analytics

* Add new map, update navigation bar, fix loading screen text

* Update map scale, loading screen, and Overview font

* Update to public version

* Small animation tweaks and bug fixes

* More animation changes and bug fixes

* Fix arrow keys moving the timeline an incorrect amount

* Apply feedback

* Fix timeline animation and offsets footnote position

* Fix clicking the timeline breaking the positioning of the handle

* Improve timeline animation, fix repeating text in info panel, remove unneeded second info panel

* Fix hover audio not playing

* Add custom events and timeline bug fixes

* Various bug fixes