HTTP2 optimization

Fast flush HTTP headers, push promise CSS.
Requires PHP 5.3+ due to anonymous function.
Do not load syles, scripts, and notifications for Ajax requests.
https://github.com/FreshRSS/FreshRSS/issues/1089

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/lib_rss.php b/lib/lib_rss.php
index 135115ea5..f89baf9b1 100644
--- a/lib/lib_rss.php
+++ b/lib/lib_rss.php
@@ -548,3 +548,7 @@ function base64url_encode($data) {
 function base64url_decode($data) {
 	return base64_decode(strtr($data, '-_', '+/'));
 }
+
+function _i($icon, $url_only = false) {
+	return FreshRSS_Themes::icon($icon, $url_only);
+}