Fixes commons-app#3403 Add padding between privacy policy button and bottom of the screen

Author: yashk2000

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

@@ -245,6 +245,7 @@
         android:layout_alignParentBottom="true"
         android:layout_centerHorizontal="true"
         android:layout_marginBottom="@dimen/normal_text"
+        android:paddingBottom="30dp"
         android:textColor="@color/status_bar_blue"
         android:text="@string/about_privacy_policy" />