[0.15.5] Allow fine control of Advanced Setting values

[PiggyWhiskey]

If you want to modify/fine tune certain values in Advanced Settings, it's impossible to set some to the value you want.

Pollution
Dissipation Rate: Locked to increments of 7
Minimum to Damage trees: Locked to increments of 68
Absorbed per damaged tree: 68

Evolution
Time Factor: 0.00000068
Destroy Factor: 0.00006849
Pollution Factor: 0.00000068


Perhaps Scroll increments by 10
CTRL by 100
ALT by 1

For the low values (Evolution etc) increment by the lowest digit available.

Or even better, an editable text field.

I was trying to slow Evolution from 400 to 300 and all I could do was 274 or 342