Updated systray support, bugfixes
-added additional icons for about dialog and system tray

main.js:
-fixed bug where browser would consume 100% cpu after a few minutes viewing index.html
-fixed bug where driver with no refresh interval would not update (now updates once a minute)
-updated button rendering to support inputs
-updated widgets to support manual refreshing

SysTray.java:
-updated about dialog

SimpleHttpServer.java:
-added handler to send commands to drivers

Coordinator.java:
-added method to allow drivers to wake themselves from outside run() (such as when a command is received)

FancyWidgetTest.java:
-added driver to test more widget elements