Better MySchoolApp

Introduces many new features for .myschoolapp websites. Feature List - Dark mode - GPA calculator - Assignment notes - Automatically show grades - Automatically sort assignments by date Changelog - v4.1.4: Bug fixes - v4.1.3: Bug fixes - v4.1.2: Bug fixes - v4.0.1: Bug fixes - v4.0.0: Class tab in assignments - v3.4.1: Assignment notes, bug fixes, expanded dark mode - v3.2.0 Bug fixes, expanded dark mode