separated the db functions to ProfilesDb
latest feature branch
fixed related test cases
base for searching in student comments
set up basic page to demo the comments searching
refactor document's fields
enhance searchManager's performance
add search limit for courses, giver and visibility options
refactor insSearchPageAction
implemented back-end method to write to GCS directly.
latest dev
latest feature branch
added new test to testng.xml
separated profiles related functions to a ProfilesDb
speeding up questionsDbTest
sped up questionsDbTest from 25 sec to 2sec
[Fixes #73867716] logic method to write to gcs available
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Optimize showing student list page
Merge branch '72753072' into Section - Fix bug slowing down showing student list page