add top threats maps as toggle-able maps

findex/_targets.R

findex/src/plot_utils.R

src/assets/css/base.css

src/assets/images/CW_Change_in_flooding_map.png

src/assets/images/CW_Change_in_ice_cover_map.png

src/assets/images/CW_Change_in_water_temperature_map.png

src/assets/images/CW_Change_in_wind_patterns_map.png

src/assets/images/CW_Drought_map.png

src/assets/images/Climate_and_weather_map.png

src/assets/images/Climate_and_weather_threat_by_basin.png

src/assets/images/FP_Overfishing_map.png

src/assets/images/Fishing_pressure_map.png

src/assets/images/Fishing_pressure_threat_by_basin.png

src/assets/images/H_Agricultural_extraction_map.png

src/assets/images/H_Dams_map.png

...sets/images/H_Deforestation_and_associated_runoff_map.png

src/assets/images/H_Industrial_extraction_map.png

src/assets/images/H_Riparian_degradation_map.png

src/assets/images/H_Urban_extraction_map.png

src/assets/images/H_Wetland_drainage_map.png