Master 61 and more

[mradamcox]

brief description of changes

A few small updates.

issues addressed

Adds the ability to use .rst files re #255
Adds guidance on javascript dependencies #61
Fixes regression of #258

further comments

The name of the javascript deps file was changed, so it will not show up in the table of contents until the new file name is reflected (this will come along with a larger set of updates to the TOC).

---

This box must be checked

• the PR branch was originally made from the base branch

This box should be checked

• after these changes the docs build locally without error

This box should only be checked you intend to follow through on it (we can do it on our end too)

• I will cherry-pick all commits in this PR into other branches that should have them after this PR is merged