flip Settings and About

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

@@ -17,21 +17,21 @@
         android:layout_height="wrap_content"/>
 
     <ImageView
-        android:id="@+id/about"
+        android:id="@+id/settings"
         android:layout_width="@dimen/icon_size"
         android:layout_height="@dimen/icon_size"
         android:layout_alignParentRight="true"
         android:layout_marginRight="@dimen/side_icon_padding"
         android:layout_marginTop="@dimen/side_icon_padding"
         android:padding="@dimen/side_icon_padding"
-        android:src="@mipmap/about"/>
+        android:src="@mipmap/settings"/>
 
     <ImageView
         android:id="@+id/toggle_photo_video"
         android:layout_width="@dimen/icon_size"
         android:layout_height="@dimen/icon_size"
         android:layout_alignParentRight="true"
-        android:layout_below="@+id/about"
+        android:layout_below="@+id/settings"
         android:layout_marginRight="@dimen/side_icon_padding"
         android:padding="@dimen/side_icon_padding"
         android:src="@mipmap/videocam"/>

app/src/main/res/menu/menu.xml

@@ -2,7 +2,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
-        android:id="@+id/settings"
-        android:title="@string/settings"
+        android:id="@+id/about"
+        android:title="@string/about"
         app:showAsAction="never"/>
 </menu>