BenQ SL490 - Storage

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The function of Import & Export PD settings.
1. Saved le name: settings.db
2. Will save to benq folder in storage.
1. Export
Will export settings.db to benq folder under USB or SD card.
If no benq folder exists in USB or SD card, it will be created automatically.
2. Import
Import settings.db from benq folder under USB or SD card.
Storage
Display current PD Android storage information.