Adjust IBus configuration and startup on Jessie
Originally created by @intrigeri on #8270 (Redmine)
config/chroot_local-includes/etc/X11/Xsession.d/80im-starter
reads:
# This script may not be needed anymore when Tails
# is based on GNOME 3.6 or newer (which is in Debian Jessie).
# https://help.gnome.org/misc/release-notes/3.6/i18n-ibus.html