Broaden facebook permissions.

Both in the sdk load and the omniauth initializer. TODO: is
'permissions' really the correct argument for the sdk load??
Display user's name and location, too.
Attempt to update facebook auth certificate.

In session manager.
Start to clean up map javascript.

Want to better modularize everything. Right now there is no trigger
from rails that actually updates the markers on the maps, but
logically things are divided up a bit better here, at least for my
sanity. Also, now we aren't calling the geocoder service over and over
every time we reload the page (as my code still does the *stupid*
thing of pulling the friend list every time the index is reloaded --
working on this).

Also added a "me" instance variable that rails passes to js through
the map partial. This whole apparatus is very ugly.