Minor polishing

* Updated application categories for pie charts to those agreed with Uppsala
* Removed lane load stacked bars for lib prep projects
* A few visual tweaks
Interesting! For me the evil twins have always been `===` and `!==`, probably due to my origins of sloppy web design coding. I have had far more troubles as a result of my variable accidentally being stored as a string instead of an integer than the other way around.. So I quite like the type coercion! :disappointed_relieved: