Added data classes bases, Trivial modifications to many files

Update .gitignore, .htaccess, and 19 more files...

commons/content/data/twitter_card.php

@@ -0,0 +1,20 @@
+<?php
+
+/*enum Suit {
+case Hearts;
+case Diamonds;
+case Clubs;
+case Spades;
+}*/
+
+// See: https://developer.twitter.com/en/docs/twitter-for-websites/cards/overview/markup
+/*class ContentTwitterMetadata {
+public string $title;
+public string $description;
+public string $type;
+public string $url;
+public string $image;
+public string $image_type;
+}*/
+
+?>