Gene Regrowth Time Column

[Nibato]

I just added a small column to show how much time is remaining before genes are regrown.

I've never made a Rim World mod before, so I'm not really sure if I've done things properly. If anything needs to be changed just let me know.

[Mehni]

This looks alright to me. Good idea, thank you for your contribution!

I'll create a Steam release later this week.