renamed tag

src/main/java/com/owncloud/android/ui/adapter/ActivityListAdapter.java

@@ -79,7 +79,7 @@ public class ActivityListAdapter extends RecyclerView.Adapter<RecyclerView.ViewH
     public static final int ACTIVITY_TYPE = 101;
     private final ActivityListInterface activityListInterface;
     private final int px;
-    private static final String TAG = "ActivityListAdapter";
+    private static final String TAG = ActivityListAdapter.class.getSimpleName();
     private OwnCloudClient mClient;
 
     private Context context;