Provide a way to share a URL to a specific paper/presentation/etc. entry

[bradcray]

Currently, when wanting to share a specific presentation or paper, I find myself either:

• linking to a specific element of the entry, like the slides, video, or paper
• linking to the overarching page (e.g., .../papers/) and then telling the recipient to "search for the entry with title 'xyz'"

This issue requests that we have a way to provide a link to each entry and an easy way to select that link from the website itself, where my two thoughts are:

1. we could make the title of the entry a self-link and push all artifacts into entries like [slides], [paper], [video], etc.
2. we could add a little hyperlink icon following each entry as in chpldoc and many other modern sites