Merge pull request #819 from isuftin/master

Dropped font size for legend, added a hack to get layers showing up on first item load on front
Reverting to previous color map, put it in as an implementation of the ColorMap interface so that I could use some of the working code
Using actual years in sld
Merge pull request #820 from jiwalker-usgs/master

Reverting to previous color map, put it in as an implementation of the C...
Merge branch 'master' of https://github.com/USGS-CIDA/coastal-hazards
Added layer picker graphics to map