[#62009744] Added a page to the knowledge base covering how a group admin can cancel a fee for a group member.

![fullscreen_1_8_14__9_37_am](https://f.cloud.github.com/assets/2251119/1869454/c95540e6-787a-11e3-8183-0bd621947c26.jpg)


![fullscreen_1_8_14__9_37_am](https://f.cloud.github.com/assets/2251119/1869459/d9f0e9c8-787a-11e3-9143-b75e04ae4525.jpg)