fixing bugs on building trainstations and number of agents limited by the number of built train stations

minor bug fixes in node connecting algorithm

All starting positions are valid.
Check for feasibility of map is not yet done.

and render custom obvsercations

Now turns with the agent, encodes local information which can easily be enhanced by predictions, distance map and other things.

added reset() function to rendertools

also added new prediction rendering
editor still broken with this update