Fix styling of blog, photos, term, ruby

So many fixes!

layouts/partials/single_main.html

@@ -1,9 +1,16 @@
 {{ partial "content_header.html" . }}
 
+{{ partial "table_of_contents.html" . }}
+
 {{- $layout := .Params.layout -}}
-<article{{ with $layout }} class="{{ . }}"{{ end }}>
-{{ .Content }}
-</article>
+{{- $content := .Content -}}
+{{ with $layout := .Params.layout }}
+  <article class="{{ $layout }}">
+    {{ $content }}
+  </article>
+{{ else }}
+  {{ $content }}
+{{ end}}
 
 <footer>
   {{ partial "footer_tags.html" . }}