Support/ForumUX/PRD

Goal of project:

To improve the experience of contributors and users on the support forums to make finding what they're looking for easier. This is a collection of changes (hopefully most small and simple) that will streamline giving support and make the workings of the forums more transparent for users.

Basic bugfixes

• Make thread filters work as they should and make them more apparent.
• bug 409904

Small changes

• Add icons for "solution proposed" and "request for more info"
• Add status and icon for when the original commenter replies.

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Random ideas

• Better filters for contributors to easily find:
  • Threads with no answers
  • Threads where contributor has previously posted

• https://bugzilla.mozilla.org/show_bug.cgi?id=409904