pgsql: Doc: Fix event trigger firing table

Doc: Fix event trigger firing table

The table has not been updated for some commands introduced in recent
releases, so refresh it.  While on it, reorder entries alphabetically.

Backpatch all the way down for all the commands which have gone
missing.

Reported-by: Jeremy Smith
Discussion: https://postgr.es/m/15883-afff0ea3cc2dbbb6@postgresql.org
Backpatch-through: 9.4

Branch
------
REL9_4_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/5f2a94a38d24afb2cbf79b048fdd6f5d319b9f49

Modified Files
--------------
doc/src/sgml/event-trigger.sgml | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)