remove tag.html and whitespace fixes

layouts/_default/single.html

@@ -1,6 +1,6 @@
-{{ partial "header.html" . }}
-<header><h1>{{ with .Params.icon }}<img src="/pix/{{ . }}" class=titleicon>{{ end }}{{ .Title }}</h1></header>
-<article>{{ with .Params.img }}<img src="/pix/{{ . }}" class=titleimg>{{ end }}
-{{ .Content }}
+{{ partial "header.html" . -}}
+<header><h1>{{ .Title }}</h1></header>
+<article>
+{{ .Content -}}
 </article>
 {{ partial "footer.html" . }}