Create link to activity feed route

[davemcg3]

Some users may enjoy additional ways to view the activity so provide them with a way to consume that content.

AC:
Create a new route that gathers statuses and posts, potentially also comments and feedback, and organizes them into an Activity Feed.
Ensure activity from blocked or blocking profiles is not included.
In the navbar there should be a link to view all the activity chronologically.
We may want 2 filters in that view: 1) chronologically based on created_at, 2) chronologically based on modified_at.
Add pagination to the results.