removed unnecessary password_repeat property (as it's not used anywhere)
added ; on SQL statement endings
max. username length = 64 characters
html5 patterns to fit the field rules
new SQL statements (email field cannot be NULL anymore)
HTML5 "required" attributes in login input fields
- user need to provide email now, registration without email is not possible anymore
- PHP checks for username structure (a-z, A-Z, 0-9), email structure
- removed 64 char limit for password. passwords can now be 1024 chars
changes may 18th 2013