Qt: Use file selector in Set Location if session is local (#502)

It's the only place where Session::isServer() is used to decide if
a file selector should be used, or a text box. Session::isLocal()
is used everywhere else.

Co-authored-by: dubhater <cantabile.desu@gmail.com>
Co-authored-by: Mike Gelfand <mikedld@users.noreply.github.com>

qt/RelocateDialog.cc

@@ -46,7 +46,7 @@ RelocateDialog::RelocateDialog(Session& session, TorrentModel const& model, torr
         }
         else if (path != tor->getPath())
         {
-            if (session_.isServer())
+            if (session_.isLocal())
             {
                 path = QDir::homePath();
             }
@@ -59,7 +59,7 @@ RelocateDialog::RelocateDialog(Session& session, TorrentModel const& model, torr
         }
     }
 
-    if (session_.isServer())
+    if (session_.isLocal())
     {
         ui_.newLocationStack->setCurrentWidget(ui_.newLocationButton);
         ui_.newLocationButton->setMode(PathButton::DirectoryMode);