Set toolbar in BaseActivity. Show title in MangaDetailActivity

app/src/main/res/layout/activity_main.xml

@@ -1,17 +1,11 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:gravity="center"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <android.support.v7.widget.Toolbar
+    <include
         android:id="@+id/toolbar"
-        android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:background="?attr/colorPrimary"
-        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
-        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
-        android:elevation="4dp" />
+        layout="@layout/toolbar"/>
 
     <!-- the layout which will contain (host) the drawerLayout -->
     <FrameLayout