Update docs site versioning

[dgmccart]

Currently, the acquire-zarr docs are found on the dev branch of the website, and the website versions are tied to versions of acquire-imaging. We have 3 tasks associated with fixing this:

• Remove all acquire-imaging content from the site (do not have information accessible via the dropdown)
• Update the versioning to pull from acquire-zarr
• Deploy the current version as stable

[melissawm]

Completed in gh-pages