Test Hugo Site with subdir in baseURL permalink

`canonifyURLs = false`

Discussion

`.Site.BaseURL`	https://hugo-sandbox.netlify.com/subdir-canonify-false/

`$myRefRel`	images/gopher.png
`$myRefRel`	images/gopher.png
`relURL $myRefRel`	/subdir-canonify-false/images/gopher.png
`absURL $myRefRel`	https://hugo-sandbox.netlify.com/subdir-canonify-false/images/gopher.png

`$myRefAbs`	/images/gopher.png
`$myRefAbs`	/images/gopher.png
`relURL $myRefAbs`	/subdir-canonify-false/images/gopher.png
`absURL $myRefAbs`	https://hugo-sandbox.netlify.com/images/gopher.png

For testing locally, you can run hugo server -b localhost/foo/ --navigateToChanged.