REST API definition

[erget]

This will be reflected more concretely in views.py, but for now we can collect machine readable endpoints here:

• / - Homepage, human readable, lots of plots and nice stuff
• /data/ - entry point for getting raw data. Format: data/$format/$station_id/$start-$end, e.g.:
  • /data/csv/stations/ returns a CSV of available stations
  • /data/csv/0/2015-01-01 00:00 - 2015-07-27 22:00 returns a CSV from 00:00 1 Jan 2015 till 22:00 27 Jul 2015 at station 0
• /plots/ - entry point for server side rendered plots
  • /plots/$station_id/$start-$end/ returns PNG plot for requested time period