Fixing some more issues!
- Enlarged and transposed bar (fixes #6; closes #9);
- Set the game up for vertical gameplay (closes #15);
- Added rebound angles for the ball depending on where it collides with the bar (fixes #10);
- Removed middle line as it's unneeded (closes #18);

Unsure as to the graphic renderization of the transposed bar, would need to test on a live board.
Compilation tests: Pass (@ Symphony EDA Sonata 3.0). Unable to make a simulation for it until I have the FPGA board for testing.

Signed-off-by: jaBote <javote91@hotmail.com>