Cleanup unnecessary label code regarding viewport limits, also and make it more simple
Cleanup unnecessary label code regarding viewport limits, also and make it more simple

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