Doc: including Android permissions needed by Qt

New check box in Android Manifest Editor.
Fix the description for adding permissions from
the list.
Update screenshot.

Change-Id: Ifc74a84be7a9df32a5cc0513e56f8fa4d504c9c5
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

doc/src/android/deploying-android.qdoc

@@ -235,6 +235,9 @@
     install the application. Android OS then grants the application access to
     the appropriate data and features.
 
-    To add permissions, select \gui Add and select permissions from the list.
+    Select the \gui {Include default permissions and features for Qt modules}
+    check box to add the permissions needed by Qt libraries.
+
+    To add permissions, select them in the list, and then select \gui Add.
 */