shell: Don't create top panel anymore

Desktop view now adds a clock that when clicked reveals the control
center with weather, language and calendar.
shell: Set clock color to highlighted text

Use system palette to give a color to the clock.
lookandfeel: Don't show seconds on info pane
lookandfeel: Scale info pane font point size
lookandfeel: Add BatteryIcon component

Convenient component that shows an icon for the battery.
lookandfeel: Add BatteryInfo component

Add a component with battery icon along some descriptive text.
lookandfeel: Add a component for circular buttons
lookandfeel: Add a method to set information message on MessageBox

Also add an icon to the artwork folder.
lookandfeel: Move LoginScreen to components
lookandfeel: Shield the lock screen

The shield lets us show notifications and status information out of the
greetet itself where we don't have much space.
lookandfeel: Remove unnecessary code from login manager
lookandfeel: Remove NoiseBackground from login manager

It's in the Hawaii framework.
lookandfeel: Move SelectionScreen from loginmanager to components
lookandfeel: Use Icon from Hawaii.Components

Remove our copy here and use the one from Hawaii framework.
lookandfeel: Use BatteryInfo in InfoPane
lookandfeel: Move shutdown buttons to components