Merge "Close the Drawer on BACK button if the Drawer is opened"

        return mFirstHeader;

    }

    @Override

    public void onBackPressed() {

        if (mDrawerLayout.isDrawerOpen(mDrawer)) {

            mDrawerLayout.closeDrawer(mDrawer);

            return;

        }

        super.onBackPressed();

    }

    @Override

    public void onBackStackChanged() {

        setTitleFromBackStack();