CSP: fix custom icons. Remote loading of https

images is probably fine.

index.html

@@ -4,7 +4,7 @@
 	<meta http-equiv="X-UA-Compatible" content="IE=edge">
 	<meta charset="UTF-8">
 	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
-	<meta http-equiv="Content-Security-Policy" content="default-src 'self'; img-src 'self' data:; frame-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' https://fonts.googleapis.com 'unsafe-inline'; font-src 'self' https://fonts.gstatic.com; connect-src https://api.github.com">
+	<meta http-equiv="Content-Security-Policy" content="default-src 'self'; img-src 'self' data: https://*; frame-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' https://fonts.googleapis.com 'unsafe-inline'; font-src 'self' https://fonts.gstatic.com; connect-src https://api.github.com">
 
 	<title>Rambox-OS</title>