Fix web map formats
Remove Explore dropdown for jpg and display JPEGs as well
Data item in the nav bar redirects to /dataset. No dropdown
Home icon in breadcrumbs redirects to /dataset
Add 'Interactive Datasets' link to https://explore.data.gov in search page
Remove 'Advanced map preview' from resource page
No dropdown for WMS and KML, also View not Preview
Add more formats to the Visit Page category

Including the ones without format defined!
Change links in resource listings

Direct link to the resource page for TXT, CSV, XLS, JPEG, JPG, PNG and
GIF. Refactor helper functions. Get rid of the Explore dropdowns.
Make Site wide search use data.gov search
Replace ugly hack with ugly hack to avoid massive whitespace in FF and IE