Merge branch '1401-refactor-network-layer' into 1403-implement-anonymous-user

# Conflicts:
#	modules/build.gradle
#	modules/src/main/java/app/lounge/networking/FetchError.kt
#	modules/src/main/java/app/lounge/networking/NetworkFetching.kt
#	modules/src/main/java/app/lounge/networking/RetrofitConfig.kt
#	modules/src/main/java/app/lounge/users/anonymous/Anonymous.kt
#	modules/src/main/java/app/lounge/users/anonymous/AnonymousAPI.kt
#	modules/src/main/java/app/lounge/users/anonymous/RetrofitAnonymousAPI.kt