[gravatar] Update config file style/name

gravatar/config/gravatar.config.php

@@ -0,0 +1,28 @@
+<?php
+
+// Warning: Don't change this file! It only holds the default config values for this addon.
+// Instead overwrite these config values in config/addon.config.php in your Friendica directory
+
+return [
+	'gravatar' => [
+		// default_avatar (String)
+		// If no avatar was found for an email Gravatar can create some pseudo-random generated avatars based on an email hash.
+		// You can choose between these presets:
+		// - gravatar : default static Gravatar logo
+		// - mm       : (mystery-man) a static image
+		// - identicon: a generated geometric pattern based on email hash
+		// - monsterid: a generated 'monster' with different colors, faces, etc. based on email hash
+		// - wavatar  : faces with different features and backgrounds based on email hash
+		// - retro    : 8-bit arcade-styled pixelated faces based on email hash
+		'default_avatar' => 'gravatar',
+
+		// rating (String)
+		// Gravatar lets users self-rate their images to be used at appropriate audiences.
+		// Choose which are appropriate for your friendica site:
+		// - g : suitable for display on all wesites with any audience type
+		// - pg: may contain rude gestures, provocatively dressed individuals, the lesser swear words, or mild violence
+		// - r : may contain such things as harsh profanity, intense violence, nudity, or hard drug use
+		// - x : may contain hardcore sexual imagery or extremely disurbing violence
+		'rating' => 'g',
+	],
+];