basic version of admin search for students
move table out of well
1.remove rebuild doc
2.show student's feedback submission link in search page
1. add course join link showing for student search result
2. add feedback session name for student search result row
set default display to none
1. add more comments to make admin student search method more clear
2. rename the adminstudent search method
1. add auto select for input when it is clicked
2. add disclose all and collapse all button
3. add student home page link
change the case of button names
refactoring
[2276]admin can search for student

fixes #2276