make HW GPS optional on phone

app/src/main/AndroidManifest.xml

@@ -13,6 +13,14 @@
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <!-- only useful if this phone can do BTLE -->
     <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" /> <!-- needed to access bluetooth when app is background -->
 
+    <!-- If a device is missing a GPS - we will still be able to work though -->
+    <uses-feature
+        android:name="android.hardware.location"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.location.gps"
+        android:required="false" />
+
     <uses-permission android:name="android.permission.WAKE_LOCK" /> <!-- for job intent service -->
 
     <!--