Add the ability to see organizations in list form

It was difficult to know what organizations were based only on their
avatar.  It was also difficult to understand the organization of the
organizations/countries in block format.  While imperfect, showing a
list with a github handle can give more information.

* Add toggle links for list/avatar view
* Add div with list to the community page
* Add id to the community avatar block
* Add styles for org list
* Add a small amount of javascript to show/hide the divs