Merge "Revert "Framelayout for recyclerview and appbar"" into rvc-dev

        android:layout_width="match_parent"

        android:layout_height="match_parent">

        <FrameLayout

        <androidx.coordinatorlayout.widget.CoordinatorLayout

            android:layout_width="match_parent"

            android:layout_height="match_parent"

            android:orientation="vertical">

            <FrameLayout

                android:layout_width="match_parent"

                android:layout_height="match_parent">

                android:layout_height="match_parent"

                app:layout_behavior="@string/scrolling_behavior">

                <LinearLayout

                    android:layout_width="match_parent"

            <include layout="@layout/directory_app_bar"/>

        </FrameLayout>

        </androidx.coordinatorlayout.widget.CoordinatorLayout>

        <LinearLayout

            android:id="@+id/drawer_roots"