Button css
Fix for issue: Search for Document with name that doesn't exist leads to unworkable state
Turned it into a form. Added validation
Panel will allow an empty doc name, leading to saving "_design"
Docs: Fix doc building under CI

Under CI the CouchDB version configured can break the LaTeX PDF
building.

This patch munges the release name for doc builds.

Python styles from Eli Stevens and Alexander Shorin.

Closes COUCHDB-2007
Merge branch '2007-fix-docs-under-ci'

* 2007-fix-docs-under-ci:
  Docs: Fix doc building under CI
Docs: Correct a `_revs_info` typo implying a factual error