Garmin leaderboard in gapminder in time display

Download and transform garmin leaderboard data for display in gapminder.

1. Download garmin data using leaderboard.py

2. Use https://www.gapminder.org/tools

3. Load presets using garmin-gapminder.gmstat

Remember: Run the program regularly to download the stats to a local .csv file, since garmin only share 6 months of activity data.