Business resources and User resources on our wiki

As we decided on the coga day calls, to put up two more pages on our wiki

See:

   - Business_resources
   <https://www.w3.org/WAI/GL/task-forces/coga/wiki/Business_resources> -
   links to business resources to build a good business case
   - User_resources
   <https://www.w3.org/WAI/GL/task-forces/coga/wiki/User_resources> -
   links to apps and extensions that help uses

Please add any good resources!

All the best

Lisa