[*r*epoSaver*A cEtxicoen]p "rtepioosn/:no deSqlError Id{-0s-tqmlp-Srteatepo1 2=3 8"22-3150013."c,b osrq"l
E[wrixteecNSotdaetSutso r=i eFsa]t a[l(E)r]r
or, sqlErrorMsg = "une instruction insert ou update sur la table \194\171 context_node_ngrams \194\187 viole la contrainte de cl\195\169\n\195\169trang\195\168re \194\171 context_node_ngrams_context_id_fkey \194\187", sqlErrorDetail = "La cl\195\169 (context_id)=(135) n'est pas pr\195\169sente dans la table \194\171 nodes \194\187.", sqlErrorHint = ""}

[TOOLING] sql queries to remove unused documents and ngrams from database. Usage: use a crontab to execute it every week for instance.

This doesn't compile yet.

Also, pin postgres to v11 so that we're compatible with Debian
upstream.

This caused subtle bugs when ALTER TABLE with search_title was
called. It is a wrong practice to define an index immutable when in
fact it's not. The count(id) part makes it mutable in fact.

This reverts commit 29ee1972.

It introduces a bug, it should not be merged.