Address all warnings during the Hugo build

- Add descriptions for pages that have too much content
- Add an image orientation override param so that I can specify orientation when it's missing from EXIF
- Move the author.name and author.email configurations to params; delete author.yaml

layouts/shortcodes/img.html

@@ -8,9 +8,9 @@
 {{/* Space separated list of classes to apply to the <img> tag */}}
 {{ $classes := .Get "class" }}
 
-{{ $altText := $img.Params.alt | default (.Get "alt") }}
+{{ $altText := .Get "alt" | default $img.Params.alt }}
 {{ if not $altText }}
-    {{ warnf "Image doesn't have alt text. %s" $img.Permalink }}
+    {{ warnf "Image doesn't have alt text: %s" $img.RelPermalink }}
 {{ end }}
 
 {{ $resizedImg := $img.Fit "1280x1280" }}