Bug#826717: firefox: Native notifications no longer working after upgrade

[Matthew Gabeler-Lee]

Package: firefox
Version: 46.0.1-1+b1
Followup-For: Bug #826717

This is A OK with me, because the GNOME notifications didn't work most of
the time.  With some websites (Google Calendar for one), it was 100%
failure.  I believe I found a page somewhere where someone had tracked it
down to a problem with notifications that gave a custom image URL that
required traversing an HTTP 302 redirect to retrieve the actual image.

This was a common enough bug that there's this add-on:
https://addons.mozilla.org/en-US/firefox/addon/no-native-notifications/