A couple of private server market bugs.

[SteveTrov]

1. NPC terminals on private servers are selling energy for 0.001 credits per unit, I think this is an error relating to the change from floats to ints.
2. The credits displayed at the top right of the screen when connected to a private server are 1000 times the actual balance.
3. (not sure if this is a bug) The balance on the market history shows the balance before the transaction rather than the balance after the transaction.

I have uploaded a couple of pictures to imgur that exhibit these bugs: https://imgur.com/a/HWTub

[ags131]

I just submitted a PR for #1 https://github.com/screeps/backend-local/pull/15

[scitor]

fix for #2 https://github.com/screeps/backend-local/pull/16