Validation

[meruyert93]

Hello, Cata :)
@catalinaturlea
Please, consider following changes:

• Email validation to see whether is empty or no
• Date validation to see whether is changed from the current date or no
• Password validation to see whether it is matched or now
• Password Strength validation with FromHelperText to see whether it contains special character or no,
• Password Strength validation with FormHelperText to see whether it more than 8 character