Work completed

Limited success. I was able to change the tile types without any issues on one try. Two different bugs occurred on other tries however.

1. When clicking the inactive tile type, only one client of it's group changed (at least visually that is) and when clicking the DONE button, the game crashed

2. When trying to select a group of clients to change, hovering over a client that belonged to a group of several clients only highlighted the one client under the mouse pointer and hovering over others highlighted several that should not have belonged to it's group. Then none showed in the submenu once clicked.