Changed the headers again a little.

Instead of announcing how many nodes are currently down,
it makes more sense to show the following things on the
main page:

Number of Active Nodes
Number of Dedicated (main) Nodes
Number of Connections (total)
Number of Meshlocals

Then, on the meshlocal page, it's the same thing.
THEN, on each meshlocal's page:

Number of Active Nodes
Number of Dedicated (main) Nodes
Number of Connections (for this meshlocal)
Number of Recently Down Nodes