uses javascript executor to check the profile photos
1. admin can search log by info
2. matched key word will be highlighted
update reference in adminActivityLogPage
refactor filtering of studentRecordsPage
1. fix NPE
2. add "all" param in url to block testing data
change settings for None, students, instructors
fix a bug in prev commit and fix a bug with empty panel for instructorCommentsPage
Add readonly attribute to email input field if not registered
Updated tests with html comparisons
Merge branch 'master' into Issue2540
Added instrNum as parameter to clickEditInstructorLink
fix test case
Fix indentation
Merge branch 'master' into Issue2562
Update test to verify that other input fields are editable
Tweaked StatisticsPerInstitute to ignore null emails
[Issue2562]custom instructor cannot view responses for which receiverSection is None
Merge branch 'master' into Issue2540
[2540] Cannot edit email for unregistered instructor
1. reduce iterations
2. add iterations progress indicator