Copy post parsing funcs to posts pkg

posts/render.go

@@ -3,6 +3,7 @@ package posts
 import (
 	"github.com/microcosm-cc/bluemonday"
 	"github.com/writeas/saturday"
+	"html"
 	"regexp"
 	"strings"
 	"unicode"
@@ -61,3 +62,9 @@ func ApplyBasicMarkdown(data []byte) string {
 
 	return outHTML
 }
+
+// StripHTMLWithoutEscaping strips HTML tags with bluemonday's StrictPolicy, then unescapes the HTML
+// entities added in by sanitizing the content.
+func StripHTMLWithoutEscaping(content string) string {
+	return html.UnescapeString(bluemonday.StrictPolicy().Sanitize(content))
+}