Bug#906874: xul-ext-https-everywhere no longer works with firefox-esr 60

[Adrian Bunk]

Package: xul-ext-https-everywhere
Version: 5.2.8-1
Severity: serious
Control: fixed -1 2018.1.29-1
Control: close -1

XUL addons are no longer supported. 

This is already fixed in unstable.