Added icons, helperfunction and new fancy notice message

Added icons from webcrunch resp. heroicons
Added helperfunction to display inline svg with the plugin inline-svg
Implemented fancy notice message webcrunch. Realy nice but does only
work with javascript on.

app/assets/images/icons/outline/play-circle.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" aria-hidden="true">
+  <path stroke-linecap="round" stroke-linejoin="round" d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+  <path stroke-linecap="round" stroke-linejoin="round" d="M15.91 11.672a.375.375 0 010 .656l-5.603 3.113a.375.375 0 01-.557-.328V8.887c0-.286.307-.466.557-.327l5.603 3.112z"/>
+</svg>