Use minified versions of JS libraries

Signed-off-by: Ladislav Klenovic <klenovic@nerdrobot.net>
Let the user to include the GWT logging module

Signed-off-by: Ladislav Klenovic <klenovic@nerdrobot.net>
Control STOMP debugging

Signed-off-by: Ladislav Klenovic <klenovic@nerdrobot.net>