quick fix of issue
Merge branch 'master' into Issue2587
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
[2638]'preview as student' is not accessible to co-owner
Fix test partially
Fix all tests
Merge branch 'master' into Issue2587
[2587] Add ajax for retrieving sessions list in 'Sessions' page
split form data for ajax loading and normal loading for adminActivityLogPage
Updated link to the version history
[2690]adminActivityLog: filters don't work after clicking 'older logs' link

fixes #2690
fix tests
[2692]AdminHomePageUiTest fails on dev server

fixes #2692
remove "[actual]"