History: Allow player to add entries.

[AileTheAlien]

If I could add my own messages to the history tab, that'd be really great! Even when pinning messages, I still don't get a full story, of all the events that happened. e.g. I had to slaughter my camels, because we ran out of food - the game can't know that! :)

Also, if we could click on a social event from a pawn's social tab, and add it to the colony history, that would help a lot too. Maybe the social fight that Bill and Jane had, was what led to the downfall of the colony!

Bonus - if we could take small screenshots and dump them into the history, that'd be super cool too! :)

[AileTheAlien]

The time I had to deconstruct all my wooden statues and tear up my floor, just to feed my generators through the winter, I wanted a text-box I could type in, in the game! :)