Android: Dynamically adapt grid span to card_game size

In order to avoid getting stuck making a new dimension file every time a new device is found we take a known value for how large the game card will be, take the screen size, and adjust the grid accordingly.

Source/Android/app/src/main/res/values/integers.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <integer name="game_title_lines">2</integer>
-    <integer name="game_grid_columns">1</integer>
     <integer name="loadsave_state_columns">1</integer>
     <integer name="loadsave_state_rows">6</integer>