Issue #1940306 by dawehner: Convert the node RSS feed to a display of the frontpage view.

...r/lib/Drupal/aggregator/Tests/AggregatorRenderingTest.php

...egator/lib/Drupal/aggregator/Tests/AggregatorTestBase.php

...dules/comment/lib/Drupal/comment/Tests/CommentRssTest.php

...es/file/lib/Drupal/file/Tests/FileFieldRSSContentTest.php

core/modules/node/config/views.view.frontpage.yml

core/modules/node/lib/Drupal/node/Tests/NodeFeedTest.php

...modules/node/lib/Drupal/node/Tests/NodeRSSContentTest.php

core/modules/node/node.module

core/modules/system/config/system.rss.yml

core/modules/taxonomy/lib/Drupal/taxonomy/Tests/RssTest.php