Add use of Special Characters *&^%%$#@!~+=_ to User Passwords for added Security as well as improving the GOTD/Coupon experience

Add use of Special Characters *&^%%$#@!~+=_ to User Passwords for added Security as well as improving the GOTD/Coupon experience.

See my comments as "J S" (around #58 to #60) as the use of additional asterisks (*) in the password for security purposes stopped the sign up process - as described in the GOTD readme.txt file, requiring the prospective user to go and find another way of signing up to the GOTD promotion.

Adding an * to the password acts in the same way as a D.O.S. wildcard and the password hacker/cracker have to substitute each Alpha Numeric character in each possible password attempt which can extend the hacking/cracking process by a very long time indeed.