Fix typo: current_user_can
minor form styling
Add website URL and promotion method to registration email
required field array + saving of new fields

- Add required fields array to register form
- Save website URL to wp_users table
- Save promotion method to wp_usermeta table
- Minor formatting
Add website URL and promotion method to register.php template
review action and page
Merge branch 'master' of https://github.com/affiliatewp/AffiliateWP into registration
indentation
indentation
Retain form values when form error on register page
removed redundant is_array check
Fixed url and promotion method not showing correctly on review page
Fixed affiliate rejected notice (missing break)
Add email address and username
Removed affwp_ prefix and setup errors variable
Fix notice error
Only use wp_redirect() is $redirect variable set

Fixes https://github.com/affiliatewp/AffiliateWP/issues/284
Fix https://github.com/affiliatewp/AffiliateWP/issues/286
Merge pull request #289 from sumobi/master

Only use wp_redirect() is $redirect variable set
Allow min, max, and step to be passed to the callbacks.#290