STORY: filter questions by conversations
As a user I would like to filter the questions by conversation to see all commented questions.
Acceptance criteria:
- If the user is in the Q&A forum and there are at least 3 questions, he will see the "Conversations" filter option
- When the user selects the filter option, only conversations are now displayed. Also the filter option is now highlighted.
- If the user selects the "Conversations" filter option again, the filter is reset and uncommented questions are displayed again.