Added link to highlight tweets based on line garph

Doing this in a feature branch, because I altered ted's file
Added class names, click-to-chloro after filter

Class names on bubbles and the click back to chloropleth were getting
clobbered by map redraw during search term filtering. Have to add them
back.
Fixed linking after filter. Added an 'all' button

Fixed the linking. Was using the wrong copy of data to assign classes to
dots. Now it links just fine after filtering by search term.

Also added an 'all' button so users can get the full dots map back.

Finally, the tooltip on the dots map was getting out of sync with actual
dots after filtering. Decided to just remove it altogether on filtered
views.
more new tweets and moved css into its own folder
some updated tweets
resolving conflicts with merge