Updated default flotr config fixing the not-displayed grid.
Updated default flotr config fixing the not-displayed grid.

bigspotteddog/envisionjs,notepad104/envisionjs,RobertoMalatesta/envisionjs,RobertoMalatesta/envisionjs,notepad104/envisionjs,HumbleSoftware/envisionjs,bigspotteddog/envisionjs,notepad104/envisionjs,RobertoMalatesta/envisionjs,HumbleSoftware/envisionjs