Add File > Quit for Linux users with broken system trays
Add File > Quit for Linux users with broken system trays

Works around #303

feross/webtorrent-desktop,webtorrent/webtorrent-desktop,feross/webtorrent-desktop,yciabaud/webtorrent-desktop,yciabaud/webtorrent-desktop,yciabaud/webtorrent-desktop,feross/webtorrent-desktop,feross/webtorrent-app,feross/webtorrent-app,feross/webtorrent-app,webtorrent/webtorrent-desktop,webtorrent/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop