Also:
- Refactor List view to be consistent with the standard List views.
- This involved adding support for Project type and external links to
the standard
- Now, Portfolio's List and Compact views are just wrappers around the
standard List and Compact views.
- Fix summary in Showcase view not falling back to use Content.
Fix#1165
Blackfriday automatically wraps Markdown `Content` text in `<p>` tags.
No need to wrap in additional `<p>` tags (which is also invalid HTML).
See #1197
Essentially, the Projects and Custom widgets have been renamed and their
front matter upgraded to be consistent with the new Pages and Featured
widgets.
Also, refactor the demo, changing the section order and converting the
Teaching section to a Demos section which can be used to walk the user
thought the available demos.
See #918