Fix OpenGL shaders incompatibility, webview errors and mac deploy issue, missing avatars

• Replace hardcoded shader effects by simple QML object on avatar. This fix OpenGLShader error on compability lost.
• Clean address before searching contact while in call. This fix unfound contact (shown on loosing avatar in call list for example)
• Fix CI to select Qt from MaintenanceTool and not homebrew or other libs.
• macdeployqt from Homebrew is bugged on deploying webengine application : rpath stay in absolute and cannot be used for deployment
• Fix Webview on Qt 5.15