ITSI: Fix atoms and energy 1 so the ball falls at the table's edge

[#61770344]
ITSI: Red horizontal rectangle in Atoms and Energy 2

[#61770408]
Fix countdown in the maze game to be accurate for "hard" difficulty

[#61770786]
ITSI: Bond Types 3 - Use symbols instead of words

[#61940044]
Repaint after marking atoms
ITSI: Fix highlight toggling

[#61771154]