Simplify the internal/external name placement in talker grid

Was too complicated, didn't work particularly well.  Now simpler
and works with long names/narrow page sizes
[checkpoint] basic json cycle for talker graphs working

This isn't complete but contains the basic working skeleton of
retrieving the talker graph data.  Still needs to cook the data for
query spark lines, hook up the graphs etc.  Basic positioning of the
graph div etc.
aggregateBucketTalkersJSON now returning correct struct
Per talker graphs complete