providers/http: Add unsafe function to directly embed HTML

providers/http/http.go

@@ -28,6 +28,7 @@ func (this *Provider) FuncMap () template.FuncMap {
 		"redirect":      funcRedirect,
 		"queryEscape":   url.QueryEscape,
 		"queryUnescape": url.QueryUnescape,
+		"unsafe":        funcUnsafe,
 	}
 }
 
@@ -59,3 +60,7 @@ func funcParseForm (req *http.Request) url.Values {
 	if err != nil { return nil }
 	return req.Form
 }
+
+func funcUnsafe(text string)  template.HTML {
+	return template.HTML(text)
+}