Basic error reporting.
Actually use the error reporting.
Monitor which errors have been seen, and clear on routing.
Created basic errors package and linked it in.
Added comments collection, pub/sub and fixtures.
Display comments on `postPage`.
Created a form to submit comments.
Revert "Created basic errors package and linked it in."

This reverts commit ec2f3ee8fbd455100bd4255a8eec7eab90b75aac.
Made a simple publication/subscription for comments
Denormalized the number of comments into the post.
Denormalized the number of comments into the post.
Display notifications in the header.
Only sync notifications that are relevant to the user.