Using SASS causes binary size to increase significantly

[A1Liu]

Importing SASS files is done by importing the SASS compiler via URL; unfortunately, this results in the SASS compiler being fully bundled into the final output of the app. I think this was probably the cause of the ~12MB bundle for the PoGo app, and also why the compiler took so long to run.

Removing all the SASS from the PoGo app on my personal repository resulted in the bundle dropping from 12mb to 385kb, and compile times dropping from 700ms to 53ms.