Tag regex filters as "regex" to avoid the domain validation (otherwise regex lines could not get removed). Also ensure that deleting the first wildcard/regex does not hide the first exact blocking domain (this bug has been in since the very beginning of wildcard blocking)

Signed-off-by: DL6ER <dl6er@dl6er.de>

scripts/pi-hole/php/sub.php

@@ -21,7 +21,7 @@ switch($type) {
     case "black":
         exec("sudo pihole -b -q -d ${_POST['domain']}");
         break;
-    case "wild":
+    case "regex":
         if(($list = file_get_contents($regexfile)) === FALSE)
         {
             $err = error_get_last()["message"];