Improvements

[Igor-Lira]

• [x] Collision Bee + Bee, Bee should not rebounce, but continue the move dodging.
• [x] Improve Collision Bee + Wall
• [x] Fix the hexagonBorder for all cases
• [x] After win the wall, the collision should be disabled
• [x] Bee should be respawn in the center of a unpopulated hexagon
• [x] External walls should always have collisions, even if the hexagon is mine
• [x] Fix draw issue (stroked line)