clean up StudentCourseJoinConfirmationPageUiTest
clean up StudentFeedbackQuestionSubmitPageUiTest
redo clean up StudentFeedbackQuestionSubmitPageUiTest
1.add a textArea getter in FeedbackQuestionSubmitPage
2.substitute direct access to web element with getter function in FeedbackQuestionSubmitPage object
remove unused package
redo code formatting
instructorFeedbackEdit: typo --> Responsesvisible

fix all related pages
1.delete non-existent css reference in both studentCourseJoinConfirmation.jsp & instructorCourseJoinConfirmation.jsp
2.remove wrong padding style for Confirm and Cancel buttons in instructorCourseJoinConfirmation.jsp
modify indentation for studentFeedbackQuestionSubmitPageUiTest.java
fix previously missed indentation typo
Merge branch 'master' into Issue2164
[2164] clean up StudentFeedbackQuestionSubmitPageUiTest

fixes #2164
Merge branch 'master' into Issue2153
[2153] clean up StudentCourseJoinConfirmationPageUiTest

fixes #2153
[fixes #72606556] A dummy commit to check Pivotal integration
[Fixes #72606556] another dummy commit
Merge branch 'master' into Issue2158
[Fixes #72625168] instructorFeedbackEdit: typo --> Responsesvisible

fixes #2158
Fix javascript for scrolling
[Fixes #72669418] JavaScript scroll function broken because Anchor.js not included and/or frameBody id removed