Refactoring code in public/src/admin/manage/registration.js

[ozcansid000]

I created four helper functions to replace the four levels of nested function() which made the file difficult to read. The helper functions are called handleUserAction(), handleInvitationAction(), confirmAndDeleteInvitation(), removeRow(). This resolves #72

[coveralls]

Pull Request Test Coverage Report for Build 12939787645

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.003%) to 82.668%

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Totals
Change from base Build 12896760049:	-0.003%
Covered Lines:	22323
Relevant Lines:	25582

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💛 - Coveralls