Allow administrators to add users after signup have closed

Hi magnus, i applied the patch but sadly it doesn't change anything.

The add link doesn't show up when signup are closed, is it the same for you ?

Oops, i missed it, it works now :)

Thank you very much!

It works well :)

1. You can't name a variable "signup_addusers2closed"
2. Booleans must always be in caps (FALSE, not false)
3. You never included the change to hook_uninstall to remove this new variable
4. In signup_sign_up_user(), I'd feel way more comfortable adding an additional argument to mark that an admin is performing the action, rather than just checking this variable every single time (because once it's set on, then $node->signup_status becomes completely irrelevant, and this check shouldn't be made on every hit).

Updated patch:

1. Renamed the variable.
2. Used 0 as a default instead of FALSE, as checkboxes use numeric booleans.
3. I saw that the maintainer used to not-recommended approach of querying the variable table to fetch the variable names. This is frowned upon for obvious reasons, but I'm not fixing it as it's out of scope for this patch.
4. signup_form() will now include the $signup_type as a form value, which is passed into the first argument for signup_sign_up_user(). If it's set to 'admin', it will check the variable we've created to allow the add. This module really should be using constants to define the values for things like $signup_type, but again, it's out of scope (and there are a lot of things that need to be fixed, so why get started now?).