quick fix of issue
Merge branch 'master' into Issue2587
add previously reverted BOM
add feedback session results link for unregistered student
Changed updating of feedback response
[2671]adminSearch: link for viewing results is not shown for unregistered students

fixes #2671
fix typo
[2678]StatisticsPerInstitute: incorrect unique student count

fixes #2678
Merge branch 'master' into Issue2675
[2675] NPE in createFeedbackResponse
Initial Version
Merge branch 'master' into Issue2587
Modify ajax for response ate
Fix test partially
Fix test
Merge branch 'master' into Issue2638
add test cases for #2638
make status msg of nullPostParamMsg can display
catch msg for admin and the rest of cases
update testing for nullPostParamException