It's merged. It's not clear how we'll deal with feature/stretch, but
AFAICT we are not yet at the stage where it makes sense to incorporate
updating it in the release process.

Fix-committed: #10983, #10892

refs: #10994

refs: #10774

... for the same reason as all scenarios that use Tails Installer.

refs: #10720

refs: #10992

Test suite: mark "Encryption/signing and decryption/verification using Tails OpenPGP Applet" scenario as fragile.

refs: #10991

Conflicts:
	wiki/src/install/inc/stylesheets/dave.css

Revert "Enable and use the Debian jessie-proposed-updates APT repository, anticipating on the Jessie 8.3 point-release."

This reverts commit 2bf73b19.

Debian 8.3 has been released.

Fix-committed: #10898

This reverts commit 51a9e413.

I am not sure what made printing so slow for me while updating the
automated test suite for Jessie, that originally made me do this bump,
but it is not there any more.

Refs: #10395