Initializing marshalling from UserCookieStorageHandler now

This should help apps that @Inject User into singletons and application-scoped beans.
LESS generator always needs to rerun if run once
Workaround related to ERRAI-803: don't display logging pop-up in GWT 2.6 and older
Fixed ERRAI-795: Errai Security doesn't work with JSR-356 WebSocket