Added available games list and reorganized the design.
Implemented the JoinGamesList on the side panel of the active games page. Also moved the create game button from the top toolbar to the side panel of the active games page to better fit our new design.
I also removed the overview tab, which is being replaced by the side panel of the active games page. I did not delete the overview files, I just commented out their calls in MainView, so we can easily re-implement
the tab if we wanted to redesign it in the future.