Bug 1418286 - Fix bolding of common terms in bug suggestions on Windows
Bug 1418286 - Fix bolding of common terms in bug suggestions on Windows

Windows can show double-bolding with "font-weight: bolder".  But our
logic for highlighting common terms sometimes adds nested <strong>
elements due to substrings.  This makes them all just "bold" regardless
of how much they're nested.

KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder