Running Challenges v1.1.0

• new:
  • Adds Name Badge challenge
  • Adds provisional support for the Netherlands, although we won't know how well it works until the events are actually live.
  • tons of runs
• bug fixes:
  • timezone and inconsistent stats
  • average parkrun event is set to None (instead of arbitrary parkrun name) when no 5k parkruns have been completed.
  • Fixes errors when a parkrunner has only ever run at one event
  • The parkrun Explorer map now correctly hides events that aren't live, and countries that don't have any live events