Update 0.09 - Misc

Hi everyone, This is a quick update that adds some features and solves a few issues. [h3]Features Added[/h3] [list] [*] The icons on the worker toolbars now have a tooltip that describes the worker's job. [*] The following towers can now be placed on top of each other, which will demolish the existing tower and kick out it's garrison. [*] A fps (frames per second) indicator can be displayed by pressing F3. [/list] [h3]Issues Solved[/h3] [list] [*] Workers on the edge of the map sometimes stopped responding (they tried to move to positions outside the map). [/list] Till next update, André