[PE-D][Tester F] Expiry date can be past dates for update and new features

[nus-se-bot]

Expiry dates can be any date rather than dates after the current day

Can perhaps consider using Date or Calendar class to check if date is before today's date and throw error:
see stack overflow ref: https://stackoverflow.com/questions/5046771/how-to-get-todays-date

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Labels: severity.High type.FunctionalityBug
original: mukund1403/ped#3