Contact small edits

- Adjust behaviour when selecting "Send user e-mail with login details?" (show reset link OR prompt user to change password if tech set one)
- Email wording change (remove ITFlow reference and replace with MSP name)
- Show contact PIN in the portal
- Bump password min length to 8 (and enforce on tech side)
- Bugfix undefined send_email value

portal/check_login.php

@@ -50,6 +50,7 @@ $session_contact_initials = initials($session_contact_name);
 $session_contact_title = sanitizeInput($contact['contact_title']);
 $session_contact_email = sanitizeInput($contact['contact_email']);
 $session_contact_photo = sanitizeInput($contact['contact_photo']);
+$session_contact_pin = sanitizeInput($contact['contact_pin']);
 $session_contact_primary = intval($contact['contact_primary']);
 
 $session_contact_is_technical_contact = false;