#204383 by hunmonk: User can register with email address. cleaned up validation code of duplicate username/email for the case where login with email is enabled. ripped out some duplicate code.

#215999 by hunmonk: Login on Access Denied resets itself when module listing page is submitted and there is a module dependency for logintoboggan. broke this check out into a FAPI validation function, and added a check to see if the module checkbox is disabled.

clean up validation problems with users changing their username/email to another user's username/email when login w/ email is enabled.

#204600 by hunmonk: theme_lt_username_title can not be overwritten in template.php. replace all hardcoded theme calls with proper calls to theme().

#204383 by hunmonk: User can register with email address -- doc error. removed faulty doc -- users have always been able to register w/ an email address for a username. tightened check for usernames that are already taken as email addresses by another user.

#198551 by hunmonk: User registration guidelines not on top of registration form. properly re-weight the help text.

make username/password title/description themable, and don't clobber exiting attributes. some comment cleanup.

#196553 by hunmonk: LoginToboggan interferes with other modules altering registration form. manually place the registration submit function at the beginning of the submit handlers.

no validation messages or db operations are necessary when the pre-auth role is set to the auth user.

redirect should always be returned, so users who didn't create their own password are redirected to the front page if no redirect is specified.

#174553 by baldwinlouie, hunmonk: Grammer is incorrect when the password length validation message comes up.

#145727 - Help text positioned in the middle of the login form rather than the top. patch by p_palmer, myself.

#124589 -- Login on Access Denied (403) resets itself when module listing page is submitted. patch by matt@antinomia, gman.

#118517 -- Fix text substitution variables in revalidation e-mail.  patch by Benjamin Melancon and myself.