add (coarse!) analytics for preferences

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/Preferences.java

@@ -20,7 +20,6 @@ package org.sufficientlysecure.keychain.util;
 
 import java.net.Proxy;
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.ListIterator;
 
 import android.annotation.SuppressLint;
@@ -34,6 +33,7 @@ import android.support.annotation.Nullable;
 import com.google.auto.value.AutoValue;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.Constants.Pref;
+import org.sufficientlysecure.keychain.analytics.AnalyticsManager;
 import org.sufficientlysecure.keychain.keyimport.HkpKeyserverAddress;
 import timber.log.Timber;
 
@@ -82,6 +82,10 @@ public class Preferences {
         mSharedPreferences = context.getSharedPreferences(PREF_FILE_NAME, PREF_FILE_MODE);
     }
 
+    public SharedPreferences getSharedPreferences() {
+        return mSharedPreferences;
+    }
+
     public String getLanguage() {
         return mSharedPreferences.getString(Constants.Pref.LANGUAGE, "");
     }