Fix overstrict assertion
Merge pull request #1675 from steventlamb/topic/fix_duplicate_csv

Fix overstrict assertion
Add numeral library for number formatting.
Update styling for modeling popups.
Adjust z-index only when adding boundary polygon to map

This allows other pages to have polygons which display above plot tiles rather than below.

Also add comment about doing it better in Leaflet 0.8
Merge pull request #1676 from kdeloach/topic/modeling-formatting

Update styling for modeling popups
Merge pull request #1677 from RickMohr/boundary-polygon-z-index

Adjust z-index only when adding boundary polygon to map