Comment 2 for bug 1568984

There are some good news:

https://blogs.adobe.com/flashplayer/2016/08/beta-news-flash-player-npapi-for-linux.html#sthash.3gR3RhEv.CdUJSaUg.dpbs

Given that, I'm assuming that the adobe-flashplayer package will soon be updated with a recent version of the Firefox plugin, so I simply suggested that adobe-flashplayer is installed (and added a remark about HTML5).