Improved heatplant v1.0.0.2

This mod adds some function to the biomass-heatplant (woodchip-sellTrigger). The capacity is now limited. That gives you the possibility to store woodchips
and burn them bit by bit. There is now also a reason to regularly chop wood. In addition, it can now also be worthwhile to use more than one placeable heatplant for
handle a bigger amount of woodchips. As a compensation you get a little more money through the operation of the heatplant than with the regular sale.

The following feeding times were set:
7:00-8:00
15:00-16:00
23:00-0:00

The capacity was set to such a value that it must be filled once a day and after 3 feedinghours a small remainder is left in the bunker.

Changelog:
- V1.0.0.1: Problems when saving with mod-heating plants fixed.
- V1.0.0.2: Problems in connection with rootcrop sale fixed.