Update header.tpl

Added content sensitive color information to alert tab.

customer approval = 0, out of stock = 0, reviews = 0, affiliate_approval = 0 will be rendered in green, otherwise will be rendered in red. Indicating if attention is requiered or not.

Before change:
![untitled](https://cloud.githubusercontent.com/assets/9145868/4783458/4466ab9e-5d27-11e4-9dd1-3da98ce34426.png)


After change:
if everything is ok
![all_good](https://cloud.githubusercontent.com/assets/9145868/4783461/55e1c9d0-5d27-11e4-8569-12193ab81ea6.png)
If some topic need attention
![some_problems](https://cloud.githubusercontent.com/assets/9145868/4783462/5c722c18-5d27-11e4-845b-ee1ca39ee320.png)
This is a more intuitive way to display the information