Visual and trajectory updates

*level trajectory now focuses on completing first unique 21 levels before unlocking break room

*after completing 20-21 levels, future levels are selected based on lowest skill levels

*graphics update: error animation smaller, focuses on which sentence parts are incorrect, and which connecting punctuation needs to be adjusted

*"i" and "d" bubbles in the support menu (magnifying glass icon now present at bottom of screen) now have an extra grey outline for better clarity