Mechanics:
-Added the thief to the game
->The thief does not attack and tries to steal goods from your stockpile, he is slow but tanky
->As longer the game is, as more he will steal
->He does spawn at random times at a random spawner, even inbetween waves but not during peace
->You only get a message if you built an obervation tower
->After he got the resources he will disappear with a smoke bomb
->Killing him does not give you any gold
->He can climb walls
->He doesn't spawn on easy difficulty
Balancing:
-Reduced the archers base damage to 11 (before it was 12) but you can now upgrade units one point more
Bugfixes:
-You could not see the health of the well worker