Legend year aggregations now only call the SLD once for the year range instead of once for each legend child
Merge pull request #817 from isuftin/legend-update

Legend year aggregations now only call the SLD once for the year range instead of once for each legend child
Use the layer id denoted in the last part of the layer's SLD to get the legend info
Fix for the z-index of map layer popup for identification
Fix for shorelines to use top-level aggregation SLD. Currently I've disabled this because top level aggregation SLDs arent working and the fix needs to happen in the data