Very fast and quite dirty update to the v3 API

Bakaláři software, s. r. o. decided to push an update on 31. August (day before the start of school), which disabled the old API on which this app relied on. This is a 2 day hotfix to make Better Schedule working again.

Login API got rewritten and schedule API got a converter, which converts schedule from the new API format to the old. This conversion is quite dirty and major rewrite to use a database is needed.

Not all schedule edge cases have been tested as this needs to be done as fast as possible.

Version conversion needs to be properly tested too.

PS: The official app is currently broken too (at least on my school).