make show categories linkable to search, adds in more button on homepage
adds in simple wms reflector download for rasters
Make dynamic search configurable

Addresses #150
Merge pull request #191 from geoblacklight/configurable-search

Make dynamic search configurable
Merge pull request #185 from geoblacklight/simple-wms-reflector

adds in simple wms reflector download for rasters
Merge pull request #189 from geoblacklight/show-page-md

make show categories linkable to search, adds in more button on homepage
row requires container div