Removed the password fields from the "create new user" form for adding a new user to a vsite.  No reason to make vsite admins create passwords for new users.  With the password field removed, rely on the user module function to create a default password.  Force throught the "notify user" email to notify the user of the new account and a reset password link.  Also cleaned up the add/create user form to allow vsite admins to grant admin access at time of add/creating users, eliminate an extra step for them.  #1927
Update the h1 overlay title to reflect the user is now creating and add auser to their site, rather than display the stale title of Add User to Site.  #1927
Add User to Site => Add a User to Your Website.  #1927
Remove the make admin checkbox from the forms, these forms will be redone in a future release and changes to workflow will be made then.  #1927
Merge pull request #1948 from openscholar/1927-remove-password-field

Remove password field from adding a new user to your site form.