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How can integrate Progressive web apps by this app? is there any guide working with manifest json and base configuration?

How can I change Ruler icon to another icon, with svg, png or any url(url) 

How can I move smoothely placemark object in Yandex map like yandex taxi. Is there any library for drifting placemark like gps?

When I opened Menubutton PopUpMenu its scrollbar thumb, color I can not change and it is invisible, there is not any sense to know scroll position