simplified the hervorhebung shortcut

themes/meins/layouts/shortcodes/hervorhebung.html

@@ -1,6 +1,2 @@
-{{ $class := .Get 0 }}
+{{ $class := .Get "class" }}
-{{ if .Get 1 }}
+<span class="{{ $class }}"><span title="{{ .Get "title" | title }}" class="{{ $class }}">{{ .Inner }}</span></span>
-<span class="{{ .Get 1 }}">
-{{ end }}
-<span title="{{ .Get 0 | title }}" class="{{ $class }}" >{{ .Inner }}</span>
-{{ if .Get 1 }}</span>{{ end }}