ENH: refine model uploading logics

1. change the url of product env to makerworld
2. always show the uploading button without checking permission

Signed-off-by: yifan.wu <yifan.wu@bambulab.com>
Change-Id: I666042a216d1a4aca69e2a50d430532f722d9b00
(cherry picked from commit 94daddc0aa593778fbf4a9d44d92a68883292a7f)

src/slic3r/GUI/BBLTopbar.hpp

@@ -16,7 +16,6 @@ public:
     BBLTopbar(wxFrame* parent);
     void Init(wxFrame *parent);
     ~BBLTopbar();
-    void show_publish_button(bool show);
     void UpdateToolbarWidth(int width);
     void Rescale();
     void OnIconize(wxAuiToolBarEvent& event);