New map on title page

[hammerdirt-analyst]

The request is to replace the map on the title page with map markers that are scaled to the median survey result from the survey location.

1. There is work in progress that can increase the amount of information at the national and regional scale that would better serve the graphic.
2. The techniques used in the land-use chapter are used as the basis for creating a gradient that describes the probability of depassing a certain limit for a given group of data.
3. The limit we are testing is the median value of the all the survey results from the project

It may be worth letting that map feature evolve over the next two weeks before making anychanges.