More site code improvements. Better imgproc, better caption CSS, make post archetype assume we'll have images.

archetypes/default.md

@@ -1,8 +1,5 @@
 ---
-title: "{{ replace (replace .Name "draft-" "") "-" " " | title }}"
+title: "{{ replace .Name "-" " " | title }}"
 date: {{ dateFormat (.Site.Params.dateformat) .Date }}
 draft: true
-tags:
-  - tag1
 ---
-<!--more-->

archetypes/posts/index.md

@@ -0,0 +1,10 @@
+---
+title: "{{ replace (replace .Name "draft-" "") "-" " " | title }}"
+date: {{ dateFormat (.Site.Params.dateformat) .Date }}
+draft: true
+tags:
+  - tag1
+---
+
+
+<!--more-->