Added:

- config key 'config', 'api_mastodon_banner', see discussion at https://b65.me.in/display/67fef576-1564-a27a-405e-c17705255720
- the administrator can now customize it for Mastodon contacts
- credits goes to @betamax65@b65.me.in

static/defaults.config.php

@@ -91,6 +91,10 @@ return [
 		// php_path (String)
 		// Location of PHP command line processor.
 		'php_path' => 'php',
+
+		// api_mastodon_banner (String)
+		// Banner for Mastodon API
+		'api_mastodon_banner' => '/images/friendica-banner.jpg',
 	],
 	'system' => [
 		// adjust_poll_frequency (Boolean)