api: Add go files

I know this is a huge commit, but I can't be bothered to check
this in part by part.

api/markdown.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"github.com/microcosm-cc/bluemonday"
+	"gopkg.in/russross/blackfriday.v1"
+)
+
+var policy *bluemonday.Policy
+var renderer blackfriday.Renderer
+var extensions int
+
+func createMarkdownRenderer() error {
+	policy = bluemonday.UGCPolicy()
+
+	extensions = 0
+	extensions |= blackfriday.EXTENSION_AUTOLINK
+	extensions |= blackfriday.EXTENSION_STRIKETHROUGH
+
+	htmlFlags := 0
+	htmlFlags |= blackfriday.HTML_SKIP_HTML
+	htmlFlags |= blackfriday.HTML_SKIP_IMAGES
+	htmlFlags |= blackfriday.HTML_SAFELINK
+	htmlFlags |= blackfriday.HTML_HREF_TARGET_BLANK
+
+	renderer = blackfriday.HtmlRenderer(htmlFlags, "", "")
+
+	return nil
+}