merge upstram v0.53

setup/webmail.sh

@@ -33,6 +33,7 @@ VERSION=1.4.11
 HASH=3877f0e70f29e7d0612155632e48c3db1e626be3
 PERSISTENT_LOGIN_VERSION=6b3fc450cae23ccb2f393d0ef67aa319e877e435 # version 5.2.0
 HTML5_NOTIFIER_VERSION=68d9ca194212e15b3c7225eb6085dbcf02fd13d7 # version 0.6.4+
+
 CARDDAV_VERSION=4.1.1
 CARDDAV_HASH=87b73661b7799b2079c28324311eddb4241242bb