* Remove unused marked JS dependency
* Remove unused redcarpet dependency
* Render inline code in card titles
Add card_html_title helper that HTML-escapes input then converts
backtick-wrapped text to <code> elements. Apply to card titles in
board preview, card detail, public views, and notification emails.
Style inline code elements in titles to match description styling.
Co-authored-by: Andy Smith <andy@37signals.com>
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Co-authored-by: Andy Smith <andy@37signals.com>
Instead, let's use a Loofah scrubber which will create DOM nodes
directly. This should be faster and is a tiny bit simpler, as well as
removing a potential HTML injection vector.
Also, add "noreferrer" to all `mailto:` links (already present on URLs).
Mike Dalessio