Remove the jquery ui part from the repository as it will be difficult to maintain later

[sidharthkmishra]

Instead of keeping in our github we can use the google external API as mentioned at: https://developers.google.com/speed/libraries/

[sidharthkmishra]

After removing, manual testing:

1. Open https://www-student.cse.buffalo.edu/CSE442-542/2019-Summer/cse-442a/
2. Enter your UB Email ID which is part of any course or use mail id - smishra9@buffalo.edu
3. Click on Get Code button
4. Check if you receive the confirmation code on above mail
5. Go to https://www-student.cse.buffalo.edu/CSE442-542/2019-Summer/cse-442a/index.html#tabs-2
6. Enter the confirmation code received at step 4 and the Email ID
7. Click on the Start Evaluation button
8. Read the name of each student in the group and give him/her a rating by selecting an option that best describes his behavior from the drop down menu
9. Make sure to give ratings for all the students in the group
10. Click on the "Submit Ratings"
11. It will show you the message - "Successfully submitted your evaluation. A confirmation email has been sent"
12. Go to https://www-student.cse.buffalo.edu/tools/db/phpmyadmin/ and login to the thethys server
13. Click on the cse442_542_2019_summer_teama_db database and click on the student_evaluation table
14. Check if the evaluation is populated with normalized metrics
15. Click on About page and see if the look and feel the same as before