New test binaries for ASUI and asui-settings.

• usb widget now refreshes on signals and displays connection status
• key auto repeat status and toggle button on secondary widget page
• screen autolock status and toggle button on secondary widget page
• screen stays lit on charger status and toggle button on secondary widget page
• split button code into separate files and modularized for upcoming button placement editor
• brightness and volume keys now only work when the sliders are on the current widget page
• configurable lock, lock&blank, blank and secure buttons (button modes section)
• configurable action when securing device
• configurable power button action when device is secured

Run ASUI before launching asui-settings to initialize the new settings.

The "button modes" section has a bunch of new settings to configure the two lock buttons and dpad center. Grayed out buttons in ASUI are disabled because you didn't check "secure button" or the button doesn't work with your charger/autolock settings.

The two screen related toggles on the secondary widget page can be used to quickly change there corresponding display settings. A future release will allow the blank and lock&blank buttons to temporarily override these settings.

I don't know if ASUI is causing it or another program but my key repeat turns off after a few days. The third new button on the secondary widget page lets you turn it back on, or off if you want.