Highlighted metro areas

Metro areas are highlighted on mouseover
Merge branch 'click-metro' into gh-pages
Separate map and menu

Two different divs
New div for info on metro areas
Separate stylesheet
Add plot and info metro boxes
Update infometro box

Create updateInfoMetro method
Update CBSA title
Remove placeholder text for plot
County and CBSA name
State name column in data by county
Infometro box: state name
Style, font-size of p
Merge branch 'info-metro' into gh-pages