return multiple years of data on each geo
add jquery slider
default to end_year
patch import script
year slider for neighborhood map
+ wired up jquery-ui slider
+ removed year from url parameters
+ cleaned up some code for outputting list of years in community_area_geojson
Merge branch 'master' of github.com:DataMade/chicago-atlas
Merge pull request #36 from DataMade/master

date slider for neighborhood map