Big section titles denylist
This MR introduces a one-off script that populates a denylist of section titles to be excluded from the pipeline at section extraction time.
The denylist lives as a project resource in a JSON file, which now contains the outcome of https://phabricator.wikimedia.org/T323504.
Note that all manually curated denylists are propagated to all Wikipedias where section alignment is available.