Adds top level navigation and placeholder fragments.

app/src/main/java/com/majinnaibu/monstercards/MainActivity.java

@@ -31,7 +31,10 @@ public class MainActivity extends AppCompatActivity {
         // Passing each menu ID as a set of Ids because each
         // menu should be considered as top level destinations.
         AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
-                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
+                R.id.navigation_search,
+                R.id.navigation_dashboard,
+                R.id.navigation_collections,
+                R.id.navigation_library)
                 .build();
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
         NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);