Validation: Quote in account name not permitted

validate_noquoteinaccountname.diff

diff --git a/modules/Accounts/AccountsValidation.php b/modules/Accounts/AccountsValidation.php
index edc6a9f..7377ebb 100644
--- a/modules/Accounts/AccountsValidation.php
+++ b/modules/Accounts/AccountsValidation.php
@@ -44,4 +44,8 @@ if ($blockDuplicateAccounts and isset($screen_values['accountname'])) {
                die;
        }
 }
+if (isset($screen_values['accountname']) and strpos($screen_values['accountname'], '"')!==false) {
+       echo "Sorry, but quotes are not permitted in the account name.";
+       die();
+}
 echo '%%%OK%%%';
\ No newline at end of file