Make player responsive to differing screen sizes #63
Description
Currently the player is very cramped, no matter the size of the screen you're playing on. This makes the interface feel very cluttered, and impedes UX when a crossword map is large enough to have to pan through.
The player should expand to the screen a-la Syntax Sorter, which will improve usability and potentially allow the creator to generate larger crossword maps than we currently allow.
