WEN Hao 91c23d0a9d
Use webbrowser instead of get_available_screencast_viewer (#745)
* improve opening tutorial

* improve show_tutorial_dialog

* improve show_tutorial_dialog

* remove not implemented

* remove unncessary package QtWebEngineWidgets

* remove commented import of QtWebEngineWidgets
2021-05-11 09:20:54 -07:00
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