Add total count information

[meghanhade]

Add total operator count and/or total page count

[drewda]

@meghanhade how about implementing this in the context of the geo search drop-down? For example:

BTW, that's just me hacking the HTML in Chrome dev tools--not actually implementing any template logic.

[drewda]

Counts are available when filtering down to a country/state/region (added in #339), but I'll leave this issue open in case it's worth adding a grand total counts that display when no filters are applied.