All versions of Railway tickets

- login through Google and Facebook! - every 5th ticket is purchased through Android app! - tickets can now be added to the calendar; - notifications for tickets returned through the website are no longer displayed for authorized users; - fixed the problem with inability to search for trains on some devices in case of prolonged non-use of the app; - fixed the problem of inability to open a coach on some devices; - fixed several rare crashes and ANRs!