Fix reversed company and dbversion on 500 Error page

The 500 Error response page displays the company name and database
version in its footer, but those values were transposed. Fixed by
this patch.

lib/LedgerSMB/PSGI.pm

@@ -133,8 +133,11 @@ sub psgi_app {
                 level => 'error',
                 message => $error });
             $res = LedgerSMB::PSGI::Util::internal_server_error(
-                $error, 'Error!',
-                $request->{dbversion}, $request->{company});
+                $error,
+                'Error!',
+                $request->{company},
+                $request->{dbversion},
+            );
         }
         else {
             $res = [ '500', [ 'Content-Type' => 'text/plain' ], [ $error ]];