Prevent that the type of a sys_user that belongs to a client or reseller can be changed to admin.

interface/web/admin/lib/lang/en_users.lng

@@ -30,4 +30,5 @@ $wb['repeat_password_txt'] = 'Repeat Password';
 $wb['password_mismatch_txt'] = 'The passwords do not match.';
 $wb['password_match_txt'] = 'The passwords do match.';
 $wb['username_error_collision'] = 'The username may not be web or web plus a number."';
+$wb['client_not_admin_err'] = 'A user that belongs to a client can not be set to type: admin';
 ?>

interface/web/admin/users_edit.php

@@ -66,7 +66,14 @@ class page_action extends tform_actions {
 		if(@is_array($this->dataRecord['modules']) && !in_array($this->dataRecord['startmodule'], $this->dataRecord['modules'])) {
 			$app->tform->errorMessage .= $app->tform->wordbook['startmodule_err'];
 		}
+		
 		$this->oldDataRecord = $app->tform->getDataRecord($this->id);
+		
+		//* A user that belongs to a client record (client or reseller) may not have typ admin
+		if(isset($this->dataRecord['typ']) && $this->dataRecord['typ'][0] == 'admin'  && $this->oldDataRecord['client_id'] > 0) {
+			$app->tform->errorMessage .= $app->tform->wordbook['client_not_admin_err'];
+		}
+		
 	}
 
 	/*