instructor can download student list with separated first name and last name
simplify split name method and move it into stringHelper class
fix typo
1. fix typo
2. add test for split name method
fix typo and add case for empty string full name
1. correct the wrong "splited" word
2. improve the header comment
fix trivial typo
1. extract removeExtraSpace into a new method
2. separate above method from splitName method
3.add test for removeExtraSpace method and modify the test for splitName method
1. fix timeTaken with appended line break issue
2. fix colorcode null pointer issue
[2233] admin activity timing info fails on staging server due to line break issue

fixes #2233
fix <pre> tag test failures
[2235] *feedbackSubmit tests fail due to <pre> tag
fixes #2235
update help text for version label in adminActivityLogPage
[2221] adminActivityLog: give the ability to specify versions

fixes #2221
Merge branch 'master' into 74016362
[Fixes #74016362] instructor can download student list with separated first name and last name
Fix test cases
Merge branch 'master' into 74665018