added note on metro region selection
updated webapp title
fixed font weight
timeline slider goes to 2012
fixed legend
correctly handle source data domain
copy fixes
switched tab order
switched again to 18 sectors, changed chart range accordingly
fixed exception on missing values
moved intro text to right of map; moved indicator tabs on top of map

* following feedback from Design Unit
improved ranges
re-centered map
created 'thin' flavour of top film roll tab strip
root route redirects to metromonitor
let the chart breathe, man
current page highlighting
removed NAs from dataset CSV
calculate line chart ranges from current city data
removed unused chart area