Implemented push menus.
Changed push menu container IDs.
This was done to clarify the difference between the accordion menus to be
implemented and their push menu containers.
Added accordion menus.
Added accordion menus.
Merge branch 'accordion-menu' of github.com:loandy/solfege into develop
Modified accordion menu item opacity and content font color.
Added expanded content.
Fixed click event firing issue.
Changed all transitions to 1s.
Implemented better scenario reset handling after answering.
Changed references from push menus to slide menus for clarity.
Changed slide menu handle color.
Added slide menu content overflow handling.
Resolved event handling conflict with clearing the menu styling.
Changed all tab indexes to -1.
Changed accordion menu styling.
Added automatic scenario generation.
When the user has successfully guessed the tone for the current scenario, a new
scenario is generated.