Whitespace cleanup.
Process simple_overview.csv, adding lat long as possible.
Added trial data.
Fix filename for saved modified data.
Fixed data file name in previous commit.
Changed comments from double to single hashes
Added country geoname Id for processing colocated trials and updated data file.
Trial markers now added, including colocated trials at both the site and country level.
Removed uneeded navigation and edited markdown to be project appropriate.
Fixed rounding error in prep_data and updated data file.
Updated data downloads to point to correct files (including column subsets).
Minor edits on intro page.
Changed datatable options on data pages.
Moved geonames username to non committed file.