[Feature Request] Ability to sort/filter
The ability to sort and filter content would be immensely useful for finding buried links to posts that were once seen by users. This can definitely be expanded on in the future, but for now these are the most useful.

**Sorting**

- Most recent (the default right now)
- Recently popular, ie "trending"
- Views
- Posted date
- Updated date

**Filtering**

- By category/tag (see #169)
- By user
- By date (only want to see the posts from X to Y date/time)