app/publisher: remove now disallowed html escaper from template
app/publisher: remove now disallowed html escaper from template

Apparently the html escaper was not being used in the right order/place,
and the auto-escaper does a better job than us at escaping?

For reference: https://go-review.googlesource.com/c/go/+/37880

I have noticed some odd results when trying other escaping combinations,
but that's a Go problem, if any, that I will investigate independently.

Fixes #960

Change-Id: I43e6eca26404d0bcbc7a48764393186f1d112dbc

angelcabo/camlistore,camlistore/camlistore,angelcabo/camlistore,marook/camlistore,angelcabo/camlistore,marook/camlistore,mpl/camlistore,marook/camlistore,marook/camlistore,mpl/camlistore,angelcabo/camlistore,marook/camlistore,stevearm/camlistore,mpl/camlistore,mpl/camlistore,stevearm/camlistore,camlistore/camlistore,stevearm/camlistore,camlistore/camlistore,angelcabo/camlistore,stevearm/camlistore,camlistore/camlistore,camlistore/camlistore,stevearm/camlistore,stevearm/camlistore,mpl/camlistore,stevearm/camlistore,mpl/camlistore,angelcabo/camlistore,camlistore/camlistore,mpl/camlistore,angelcabo/camlistore,camlistore/camlistore,marook/camlistore,camlistore/camlistore,camlistore/camlistore,marook/camlistore,angelcabo/camlistore,marook/camlistore,stevearm/camlistore,stevearm/camlistore,mpl/camlistore,angelcabo/camlistore,mpl/camlistore