Added a setting to make captcha optional at registration.
Increased the size of registration button.
Added class to limit size to reg button.
Added admin link to header
Add option to make graphs personal or not.
Shorten text on registration page advising not to use email address as username.
test for userid before testing if user is admin
Improve error reporting in isAdmin function.
Hide captcha labels if not used.
made input fields longer
Improve register form layout
Correct anonymize and personalize settings.
Improve layout and labelling of admin settings
Corrected form names which meant settings were getting mixed up.