Update Android permissions

[bardram]

Need to update Android permissions in the manifest.xml file. Things include:

• [x] Permissions needed for notifications, incl. scheduled notifications
• [x] Bluetooth permissions are only requested when a BLE device is used. Currently we use for permission even if the protocol does not support bluetooth device connection. The app asks for BLE permissions on start up (this might be from CAMS part - check)
• [x] Permissions on Android can be marked as optional

• [x] Permission USE_EXACT_ALARM is not compliant with google play store policy according to most recent feedback we got from them.

  The use of the permission is not directly related to the core purpose of the app.

  Acceptable use cases for using the Exact Alarm Permission:
  The app is an alarm or timer app. The app is a calendar app that shows event notifications.

[bardram]

As for item no. 2 above, BLE permission is asked for because the connectivity package is part of the app. Therefore, a protocol could contain the BLUETOOT measure, in which case the app needs access to scan for nearby BLE devices. The issue is that the app asks for this permission, even if the measure is not part of the protocol.

This is a CAMS issue, see #407.