Merge pull request #466 from isuftin/master

Shoreline legend complete
Merge pull request #467 from isuftin/master

NPE protection, Legends for non-shorelines, error page
Merge pull request #468 from isuftin/master

base layer switch, openlayers pink tile fix
Clean up of UI object and moving some js functionality to CSS media queries. This should speed up the application a bit during window resizing
Better handling of bounding boxes over cards already pinned
Updated table layout for legend
back to cch as common style name
mean water level complete
Merge pull request #469 from jiwalker-usgs/master

sld changes
Merge branch 'master' of https://github.com/USGS-CIDA/coastal-hazards
Updated CSS, JS cleanup, Info page looking good, Legend Cleanup
Fixed up more CSS for mobile display of info page