Fixes #1509: Scroll wheel doesn't respond over chart because chart thinks it's time to zoom
Fixes #1509: Scroll wheel doesn't respond over chart because chart thinks it's time to zoom

Gapminder/vizabi,dab2000/vizabi,Gapminder/vizabi,Gapminder/vizabi,sergey-filipenko/vizabi,dab2000/vizabi,sergey-filipenko/vizabi,buchslava/vizabi,buchslava/vizabi,vizabi/vizabi,vizabi/vizabi,sergey-filipenko/vizabi,dab2000/vizabi,buchslava/vizabi