Integrate the questions app into the portal and make it an app generic enough to be used everywhere.
- Allow to create topics and top level categories
- empty states
- how to show the topics hierarchy in the breadcrumb
- Make configurable the category the questions list is attached to.
- rename categories to topics/sections?
- Split message boards from questions?
Take into account the styles inside a column: https://issues.liferay.com/browse/LPS-116067