New gpa average
Merge branch 'master' of https://github.com/jNunez1993/Gradebook-Management-System

Conflicts:
	includes/changeCourseGrade.php
	includes/changeHomeGrade.php
grades page actually works
AVG grades & home grade works

changeHomeGrade works
changeCourseGrade average works
Fixed bug on the average table

Doesn’t print the extra box from Tom’s work.
Merge branch 'master' of https://github.com/jNunez1993/Gradebook-Management-System
professor view view gradebook feature works
adding course.php
added course gradebook function
removed unnecessary files, added generic navbar