[1.6.x] Added release note about strip_tags improvement
[1.6.x] Added release note about strip_tags improvement

Backport of 1c8dbb0cc from master.

felixjimenez/django,django-nonrel/django,felixjimenez/django,django-nonrel/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django,felixjimenez/django,felixjimenez/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django