Minecolonies version

All of them up to and including building from source

Expected behavior

Colonists should use all varieties of available skins (i.e. childfemale1.png, childfemale2.png, etc)

Actual behaviour

Colonists only use the xxx1.png version of the skin. For instance, if you have 10 builders they will all use the skins buildermale1.png and builderfemale1.png, and never buildermale2.png or buildermale3.png

Steps to reproduce the problem

1. Change in config to allow the maximum number of starting colonists.
2. Create a new world, and place a town hall.
3. Wait for all the colonists to spawn.
4. Observe that all the new settlers have the skin settlermale1.png and settlerfemale1.png
   https://i.imgur.com/Q9yhl9I.png