Battery notifier - Reborn

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* Added vibration pattern option for battery charged/low and cable connected/disconnected
* Removed wakelock option and permission request (we recommend to add the app to the list of apps that can't be managed by the device battery manager)
* Removed first notification delay option for "battery low" event
* Removed notification text color limits
* Device charged and cable unplugged notifications are not PRO features
* UI improvements
* Updated SDK to "Android 28"