- added robots and sitemap files

- moved files that should only be copied to separate folder (just_copy)

static_pages/just_copy/robots.txt

+User-agent: *
+Disallow: /firstLoginExternalLogin.html
+
+Sitemap: https://yapex.informatik.uni-halle.de/sitemap.xml

static_pages/just_copy/sitemap.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+    <url>
+        <loc>https://yapex.informatik.uni-halle.de/</loc>
+    </url>
+    <url>
+        <loc>https://yapex.informatik.uni-halle.de/about/about.html</loc>
+    </url>
+</urlset>

webpack.config.dist.js

@@ -159,17 +159,25 @@ module.exports = {
       },
       //--- copy also static pages & assets
       {
-        from: 'static_pages/static/sha512.js', //needed for firstLoginExternalLogin
-        to: 'static/sha512.js',
+        from: 'static_pages/static/robots.txt',
+        to: 'robots.txt',
+      },
+      {
+        from: 'static_pages/static/sitemap.xml',
+        to: 'sitemap.xml',
       },
       {
-        from: 'static_pages/static/favicon.png',
+        from: 'static_pages/just_copy/favicon.png',
         to: 'favicon.png',
       },
       {
-        from: 'static_pages/static/about_icon.png',
+        from: 'static_pages/just_copy/about_icon.png',
         to: 'about_icon.png',
       },
+      {
+        from: 'static_pages/static/sha512.js', //needed for firstLoginExternalLogin
+        to: 'static/sha512.js',
+      },
       //hack because react-notifications cannot properly bundled ... the icons are not displayed
       //TODO not working because these files are overwritten by the loader!!
       {