Economy needs to be tweaked to match original

The economy feels off right now. Some issues are definitely there, some are just by feel:

• Ore/gems are twice as valuable as they should be.
• Harvesters are harvesting too quickly, I think.

@GraionDilach is the expert here.

[GraionDilach]

Bale harvesting speed must be shared with TS in the long term because the related tags fallen back to defaults - so this kinda depends on upstream.

[phrohdoh]

Absolutely nothing is balanced right now.
The goal is to get everything implemented and all actor types defined then balance.

[Mailaender]

Should be easy to fix as it is already pretty configurable: https://github.com/OpenRA/OpenRA/wiki/Traits#harvester

[GraionDilach]

The conversion from the WW values is the problem, not the OpenRA side. For reference in WW, the bale loading and unloading variables doesn't even share their type - loading is a double, unloading is an integer.