test logo usage with mipmap and pre-rendered icon

Signed-off-by: R4SAS <r4sas@i2pmail.org>

app/src/main/AndroidManifest.xml

@@ -15,7 +15,7 @@
 
     <application
         android:allowBackup="true"
-        android:icon="@drawable/ic_logo"
+        android:icon="@mipmap/ic_logo"
         android:label="@string/app_name"
         android:requestLegacyExternalStorage="true"
         android:theme="@android:style/Theme.Holo.Light.DarkActionBar"

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

@@ -17,7 +17,7 @@
             android:id="@+id/mainLogo"
             android:layout_width="match_parent"
             android:layout_height="140dp"
-            android:src="@drawable/ic_logo" />
+            android:src="@mipmap/ic_logo" />
 
         <TextView
             style="@android:style/Widget.Holo.Light.TextView.SpinnerItem"