Feature to grade the courses taken in the particular semester by the students

[deepakedayillam]

Students can rate the courses they have taken in the particular semester. So we take the courses chosen by the students for this semester using the my lectures or calendar activity . From there we do a rating bar for each course where students can give their rating . This feature will be useful to all the students in choosing the courses based on the review of the previous takers of the course.

[pfent]

archiving the work on this @https://github.com/TCA-Team/TumCampusApp/releases/tag/stale%2FCourseRating