v2.2-beta.3

+ Added settings screen
    Moved tricks and themes buttons to settings screen
    Includes buttons to open and reload the config file
+ Added statistics screen button to setup screen
+ Added database button to setup screen, currently non-functional
* Split code for key presses into each screen's class similarly to mouse presses
* Split trump suit code into its own class
* Further improved theme loading stability
    Program no longer crashes when clicking the "reload themes" button results in the current theme being removed