Use more descriptive URLs to make finding checklists easier

[jkakar]

Today I wanted to open a checklist we've been working on for the last
few days. I had it open in a tab, but I accidentally closed it... I
ended up having to go through Campfire logs to find the URL again. I
realized that I could have used the search functionality in the
location bar of my browser if the URL had some more easily
identifiable data in it.

For example, if it was like this:

https://checkcheckit.herokuapp.com/<checklist-name>/<yyyy-mm-dd>/<uuid>

I could have typed checkcheckit <checklist-name> and found it very
quickly.