Wait on the post subscription

chapter5-2
Routing to a single post page

chapter5-3
Added accounts and added template to the header

chapter6-1
Added a submit post page and linked to it in the header.

chapter7-1
Removed insecure, and allowed certain writes to posts.

chapter7-2
Denied access to new posts page when not logged in.

chapter7-3
Show a loading screen while waiting to login.

chapter7-4
Only show submit post link if logged in.

chapter7-5
Use a method to submit the post.

chapter7-6
Sort posts by submitted timestamp.

chapter7-7
Added edit posts form

chapter8-1
Added basic permission to check the post's owner.

chapter8-2
Only allow changing certain fields of posts.

chapter8-3
Basic error reporting.

chapter9-1
Actually use the error reporting.

chapter9-2
Monitor which errors have been seen, and clear on routing.

chapter9-3
Added comments collection, pub/sub and fixtures.

chapter10-1
Display comments on `postPage`.

chapter10-2
Created a form to submit comments.

chapter10-3
Made a simple publication/subscription for comments.

chapter10-4