Issue #2092343 by joelpittet, c4rl, Mark Carver: Consolidate forum.module and remove call to _theme_table_cell() within template_preprocess_forum_topic_list().
Issue #1926344 by jhodgdon, maggo, mdrummond, Cottser, dimboz | jenlampton: Consolidate search-result.html.twig and search-results.html.twig.
Issue #2152231 follow-up by InternetDevels: Small whitespace clean-up in twig template.
Issue #2181487 by sqndr: Update search icon to svg.
Issue #2190699 by tim.plunkett: Add missing modules to MAINTAINERS.txt.