v0.3.1 - STAGE2 fix

I forgot that it may not be defined.
Also, fixed an issue with default arguments in JS code - apparently iOS devices
don't support it.

v0.3 - step limit? what's that?

- removed step limit argument
- simple report available at /report

I got rid of step limit, a remnant of original PokemonGo-Map.
Now each worker should visit all points in its area.

Also I created an endpoint returning simple report about database.

v0.2 - trash release

- live map works correctly
- auto refresh on live map works, too
- workers should be smarter - they will handle "hard times" (PTC down) in a
  better way
- trash Pokemon: you can define in config which Pokemon shouldn't be shown on
  the live map (kudos to /u/buubble/ for the name suggestion)
- a few fixes to known issues

v0.1 pre-alpha preview proof of concept

It's working! But lots of things are broken at the same time. Nonetheless,
workers populate the database.

There are minor issues, especially with live viewer.