updated modern.css
Merge branch 'master' of github.com:tbrisevac/visualizer
Merge github.com:powertac/visualizer
Tariff analysis pagination; market transactions - number of timeslots to display; number of displayed decimal places in graphs; customers visualization - drill down pie chart; game overview spiderchart.
Merge pull request #8 from tbrisevac/master

New features + minor fixes