SEISMICDESIGN-158: Add intro text for WW Seismic Design Tool
SEISMICDESIGN-171: Clear info window when no data
Merge pull request #10 from aanderson-usgs/SEISMICDESIGN-171

SEISMICDESIGN-171: Clear info window when no data
Modified box styles.
Merge pull request #9 from aanderson-usgs/SEISMICDESIGN-158

SEISMICDESIGN-158: Add intro text for WW Seismic Design Tool