Update build-depends to catch up yesod-platform-1.2
Replace import module Database.Persist.Store to Database.Persist

because Database.Persist.Store namespace are deprecated.
Catch up yesod-platform-1.2

migrate only BISocie.Helpers.Util
Catch up yesod-platform-1.2

migrate Foundation.hs and around it
Catch up yesod-platform-1.2

migrate Handler/Root.hs only
Remove unnecessary import module
Remove unnecessary import module
Catch up yesod-platform-1.2

migrate Handler/Project.hs only
Catch up yesod-platform-1.2

migrate Handler/Participants.hs only
Catch up yesod-platform-1.2

migrate Handler/User.hs only
Catch up yesod-platform-1.2

migrate Handler/S3.hs only
Catch up yesod-platform-1.2

migrate Handler/S3.hs and arond it
Catch up yesod-platform-1.2

migrate Handler/Profile.hs only
Catch up yesod-platform-1.2

migrate Handler/Issue.hs only
Catch up yesod-platform-1.2

migrate Handler/Admin.hs only
Catch up yesod-platform-1.2

migrate Application.hs and arount it
Refactor: remove unnecessary import
Export Model.Fields
FIX: Fields are now strict. We should *NOT* initialize any fields by undefined
Refactor: No any warnings