Update upgrade page
Update upgrade page

* Update links
* Add alt text
* Remove Google Chrome Frame directions

documentcloud/documentcloud,monofox/documentcloud,monofox/documentcloud,gunjanmodi/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,gunjanmodi/documentcloud,gunjanmodi/documentcloud,gunjanmodi/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,ivarvong/documentcloud,dannguyen/documentcloud,dannguyen/documentcloud,monofox/documentcloud,documentcloud/documentcloud,dannguyen/documentcloud,ivarvong/documentcloud,documentcloud/documentcloud,dannguyen/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,ivarvong/documentcloud,documentcloud/documentcloud,Teino1978-Corp/Teino1978-Corp-documentcloud,monofox/documentcloud,ivarvong/documentcloud