CanvasGradesPro per Jai Patel

- Add GPA card to the dashboard cards list
- Displays your cumulative GPA and term GPA
- Stores grade to GPA mapping
- Allows you to find minimum GPA for current term to get a X cumulative GPA
- Adds grades to the dashboard cards
- Bypass instructor hiding course grades
- Allows user to add/disable weighting for assignment groups
- Allows users to configure drop rules for assignment groups
- Allows users to set custom grading standard/scale
- Adds class grade statistics
- Fixes "What-If Scores" button
- Popup for customizing grade overlay and course grades page
- Calculator for finding the minimum grade required on an assignment so that you're grade is a X% or a specified letter grade
- Custom font support for the grade overlays via Google Fonts