Liquid syntax error: "Expected end_of_string but found pipe in `"name in __names | sort"`" in `group-by-array` include

`sort` not allowed in `for` statements, remove it.

Merge branch 'release/3.1.3'

Remove white space as it was causing issues with Markdown and parsing as code blocks
- Close #279

Merge branch 'release/3.0.0'

Merge branch 'feature/refactor-includes-layouts' into develop

Merge branch 'feature/improve-demos' into develop

Add "group by array" include to simplify archive pages