(PUP-796) Deprecate CouchDB facts terminus (docs only)
(docs) Add note about install_options to pacman provider
(docs) Document special  value for yumrepo's proxy attribute
(docs) Clarify description and error message for http_proxy_password setting

"URL-compliant" was an odd way to put this, so I revised the text to be less ambiguous.
(docs) Clarify that the file type's mode attribute expects a string, not a number

Also, link to the puppetlabs/acl module.
Merge pull request #3008 from nfagerlund/docs_37_deprecations_and_revisions

Docs: 3.7 deprecations and revisions