Selection color added. Deselects on 1st load only.

When player selects a piece, the bg changes to a light gray color. Issues with deselecting. Other minor changes to naming and code cleanup.
Fixed deselect issue
update
update
update
update
update
Merged code
fix it felix
Merge branch 'master' of https://github.com/4fab/ChessPrj.git
fix check
attempting checkmate
Cleaned up
Cleaned up
Cleaned up
Cleaned up
Cleaned up
Finalized
Finalized
Finalized