Finished code cleanup

Game-related sources have been cleaned up and commented. The GUI package
sources haven't been touched upon because they are a part of a separate
project.
Revert "Finished code cleanup"

This reverts commit 4428bd9b0c92946c0c7de3208ec57b8383b41996.
Revert "Revert "Finished code cleanup""

This reverts commit fafb2bfd7456a557f528fbdfd52a6602149a8dff.
Removed unnecessary files

Removed an error log and a tarball that were accidentally added to the
project.