Add the download permission

[colonelpanic8]

... is there any reason this is not currently in the manifest?

[smblott-github]

What's your use case?

[jidanni]

I want to download my https://mbasic.facebook.com/notifications.php?more and then process it with a shell script, all without even a single click. Same with my https://mbasic.facebook.com/groups/?seemore . (No I cannot just use https://github.com/libwww-perl/WWW-Mechanize for Facebook.)