Shows sorted list of power usage (with some debug information) by the top 10
apps and subsystems. Doesn't yet take into account certain subsystems such
as data network usage, audio/video DSP usage, Bluetooth and lights other than
screen backlight.
Screen, Idle, Wifi and Voice usage and CPU time are accounted for.
Also need to add detail screens for each item and suggested actions.
Change uninstall string value to Factory reset for updated system apps
present a new confirmation dialog when factory resetting a system app.
refresh size, app properties and button's text(to clear, uninstall or factory reset) in onStart
Add new version attribute in layout. Add new layout attributes for app snippets instead of using the one
from ManageApps
Use managed dialogs to avoid leaks
