Mining Prices Overhaul

[Karst]

After testing several routes, we've used new FLComp settings that yield more accurate results.
Also included more accurate mining locations, which should be the best realistic mining options available.

Things not included are for example the Independent fields in Dublin, as they are inferior to BMM fields despite being somewhat closer to the Île-de-France and New Tokyo sell points.

Also not included are very slow fields closer to the sell points, such as Premium Scrap in New London or Raw Hydrocarbons in Manchester.

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