Downloads UX Changes

[kugiigi]

Originally from #336

• Fixes Annoying downloader #193
• Implemented recent downloads dialog in bot the browser and webapp. This is displayed when a new download started instead of the downloads page.
• A downloads button is added in the navigation bar which wiggles and turns blue when a download completes. In webapps without the title bar, the recent downloads dialog is displayed instead
• Only display the file names in the Downloads page instead of full path.
• Added info such as file size and download speed in the Downloads page
• Added actions such as copy download link and remove from history

[UniversalSuperBox]

This PR appears to conflict on DownloadDelegate.qml... Could you rebase it and resolve that conflict? At the moment it isn't testable due to the Oxide removal...

[kugiigi]

@balcy Is your commit already what Dalton requested? Do I still need to do something here?

[balcy]

yes it was the merge conflict

[UniversalSuperBox]

This seems to work well on tablet and mobile usecases, but I've found a few issues.

[UniversalSuperBox]

Files that you're creating should at least have a current copyright date, either for yourself or for the UBports Foundation if you wish to assign your copyright to us.

[kugiigi]

I've updated it to UBports and also to 2021