Added change password, multiple modifications

Added change.cfm to allow speakers to change their password

Modified index.cfm to check if the logged in user is an admin and
redirect them if they are (to admin.cfm, not yet built)

Modified profile.cfm to get the user object and change the username to
match the email, also modified to redirect to a success.cfm (not yet
built) page upon completion of the update process.

Modified UserDAO.cfc to remove encryption for roles