mod_smacks: Don't close resuming session when failed due to overflow

mod_smacks: Long overdue cleanup of resumption code, fixes some old TODOs

mod_admin_shell: Rename variable to avoid confusion with global function For luacheck, but it doesn't actually complain about this right now

mod_admin_shell: Fix output from user:roles() It used _G.print instead of the shell session print, which would silently write to stdout

Merge role-auth->trunk

CHANGES: Add role auth

mod_admin_shell: Ensure account has role before it is usable By creating the account first without a password it can't be used until the role has set. This is most important for restricted accounts, as a failure to set the role would lead to the account having more privileges than indented.

mod_auth_insecure: Store creation and update timestamps on account This ensures that the store is not empty in case no password is provided, so the underlying data storage won't consider the store empty.

mod_admin_shell: Update help for user:create to reflect singular role argument

mod_auth_internal_hashed: Allow creating disabled account without password Otherwise, create_user(username, nil) leads to the account being deleted.