This updates Spring, Logging and Netty-socketio. The new Netty-socketio
version fixes memory leaks and disables SSL3 encryption (POODLE
vulnerability).

Netty-socketio 1.7.3 fixes memory leaks.

Daniel Gerhardt authored 10 years ago and Daniel Gerhardt committed 10 years ago

Cherry-pick commit 4015a255 which was lost in merge.

This is no longer needed since the "released for" per question setting
has been removed.

Fixes memory leak in netty-socketio.

* Organize imports
* Add missing Override annotations
* Remove trailing whitespace