Limit precision of output on some messages

NB. This touches TFEnergyProcedures.cs, which has had significant changes recently. (I am now quite confident !964 (merged) and other recent changes work as expected, however I think the impact from fixing the shared TFE pool might be surprising for some players during the main round, so it might be helpful to keep the existing recent changes easy to back out if there is a problem). The changes in this MR should just be cosmetic and not functional (except for some distant decimal places) but might affect the ability to back out other changes.

Fixes #667 (closed)