SJRK-172: Consider adding Markdown blocks

Description

Think about whether it's worth adding blocks which consist of user-authored Markdown content. This could be implemented using the md helper in gpii handlebars.

Make sure to account for possible cross-site scripting attacks:
https://github.com/showdownjs/showdown/wiki/Markdown's-XSS-Vulnerability-(and-how-to-mitigate-it)

Comments

• Dana commented 2020-04-14T17:30:08.627-0400

  Provide markdown support in text block as-is

• Gregor Moss commented 2020-04-14T17:41:48.670-0400

  That's the easiest option from a coding perspective 🙂 Should we document this feature somewhere in the site? I.e. on text blocks there could be something that says "Markdown supported" or similar, perhaps with a link to a brief cheat sheet or tutorial.

• Gregor Moss commented 2020-07-14T07:33:45.353-0400

  Functionality has been added to automatically detect links in text blocks. Should determine whether to add the same for other fields such as block headings and media block descriptions.

• Dana commented 2020-07-14T12:04:38.394-0400

  Thanks @@Gregor Moss this is great. I don't think we'd want to have links in the description or alt-text, but I'm thinking we should allow them in headings.

• Cindy Li commented 2020-07-17T14:04:43.749-0400

  The pull request for supporting markdown has been merged into the project repo master branch at this commit.