register and login work; email validation functionality added;

Can't get it to send email from xampp though so have to manually enter
link to validate email.
Merge remote-tracking branch 'origin/local_branch' into Release-1
username/password recovery done
Merge remote-tracking branch 'origin/local_branch' into Release-1
logout added; mail validation fix; get users;

added lockout for 5 incorrect passwords;
other bug fixes
Merge remote-tracking branch 'origin/local_branch' into Release-1