Adding a space between element attributes that was preventing HTML validation

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Changing the X-UA-Compatible meta tag to force IE to render as IE10. This should fix #110, at least for now.
Also adding a tag to explicitly declare UTF-8 charset, for validation help

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Swapping toLocaleString out for a custom formatNumber function, compensating for quirks in IE's local implementation (i.e. adding two-digit decimal precision to numbers that don't need it)

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Adds an underline on hover/focus for export links - this addresses #111, as an alternative to rendering a link as a button

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Changing messaging above the timeline - this closes #113

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Appends a title element for the map, closing #114

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Changing filter UI to make label "Apply filter" rather than "Submit". This closes #115

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Further refinements to the new title on the map, giving it more space above the map and ensuring that it persists across tab changes
Related to #114

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Changing language for empty table to be author-specific
(No valid scenarios exist for someone to see no DLC content)
This closes #116

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Adding note about date ranges to map footnote. This closes #117

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Merge pull request #118 from matt-bernhardt/master

This closes feedback items received from last round of pre-launch testing