use localStorage if indexedDB is not supported
use localStorage if indexedDB is not supported

Speed-Pad/online,the-impossible-quiz-revisited/the-impossible-quiz-revisited.github.io,the-impossible-quiz-revisited/the-impossible-quiz-revisited.github.io,bertfreudenberg/SqueakJS,sebastianconcept/SqueakJS,bertfreudenberg/SqueakJS,the-impossible-quiz-revisited/the-impossible-quiz-revisited.github.io,fmateoc/SqueakJS,fniephaus/SqueakJS,bertfreudenberg/SqueakJS,fniephaus/SqueakJS,fmateoc/SqueakJS,fmateoc/SqueakJS,Speed-Pad/online,the-impossible-quiz-revisited/the-impossible-quiz-revisited.github.io,fniephaus/SqueakJS,bertfreudenberg/SqueakJS,fniephaus/SqueakJS,sebastianconcept/SqueakJS,fmateoc/SqueakJS,Speed-Pad/online,sebastianconcept/SqueakJS