Timekeeping system could be less confusing

[ghost]

While internally consistent, the "space hours:space minutes" system isn't the most intuitive to pick up, and at least a few test players have assumed the ETAs on various in-game actions were in real time.

We should probably ask around to get consensus on what's best here, but I propose that we rework the bottom-right time display in the client to show the current turn number, and the real time remaining in that turn (the data needed to sync this could be provided on connect and during every turn update). Actions could then be reworked to show either real time or turn count measurements on ETA... perhaps a toggle depending on the player's preference?

[Ragora]

That sounds pretty reasonable, that system right there seems like it would map better to people's general view of the passage time (we're making it relative to real time, after all). This action takes this much real time to complete, though I dunno if we'd want to display turns or real time -- so yea, a config to use either where it defaults to turn count seems to be a good route to go.