add s_info.png image to the original theme

This commit corrects my previous commit - e748b7c which referred to #1457 request. When I tested the phpmyadmin in the original theme the s_info.png was missing in the themes/original/img/ folder. I copied the b_info.png and pasted it as s_info.png so the original theme could render correct images. 

this is the error I was getting and which is corrected with the new image
![s_info](https://f.cloud.github.com/assets/3743610/1231158/82970be6-2837-11e3-9588-5b64f366d6e1.PNG)