Truncate metadata values to 140 chars in document summary
Truncate metadata values to 140 chars in document summary

Long metadata values would take up too much space on the summary page
if left untruncated. e.g. Tribunal decision's hidden_indexable_content,
which is the length of the entire document.

alphagov/specialist-publisher-rebuild,ministryofjustice/specialist-publisher,ministryofjustice/specialist-publisher,alphagov/specialist-publisher,alphagov/specialist-publisher-rebuild,alphagov/specialist-publisher-rebuild,alphagov/manuals-publisher,alphagov/manuals-publisher,ministryofjustice/specialist-publisher,alphagov/specialist-publisher-rebuild,ministryofjustice/specialist-publisher,alphagov/manuals-publisher,alphagov/specialist-publisher,alphagov/specialist-publisher