Move all layouts to platters theme

themes/platters/layouts/partials/content_header.html

@@ -0,0 +1,26 @@
+<header class="content-title">
+  <h1>{{ .Title | markdownify }}</h1>
+  {{ with .Description -}}
+    <p class="subtitle">{{ . }}</p>
+  {{- end }}
+
+  {{ with .Date -}} 
+    <time>{{ . | time.Format "January 2, 2006" }}</time>
+  {{- end }}
+
+  {{- if .Params.series -}}
+    {{- $series := .GetTerms "series" -}}
+
+    {{- if gt (len $series) 1 -}}
+      {{- errorf "More than one series for %s" .Permalink -}}
+    {{- end -}}
+
+    {{- with index $series 0 -}}
+      <span class="series">
+        <a href="{{ .Permalink }}">{{ .Title }}</a>
+      </span>
+    {{- end -}}
+  {{- end -}}
+
+  {{ partial "development/draft_tag.html" . }}
+</header>