Merge pull request #235 from OCram85/featureAlert

<div class="alert alert-warning d-flex" role="alert">

  <div class="flex-shrink-1 alert-icon">{{ with .Get "icon" }}{{.}} {{ end }}</div>

  <div class="w-100">{{ with .Get "text" }}{{ . | safeHTML }}{{ end }}</div>

  {{ with .Get "text"}}

    <div class="w-100">{{ . | safeHTML }} </div>

  {{ else }}

    {{ with .Inner}}

      <div class="w-100"> {{ . | markdownify}}</div>

    {{ else }}

      {{ errorf "No valid text variable or Inner content given"}}

    {{ end }}

  {{ end}}

</div>