Fixed Chrome bug in this-chart.js

Commented out lines 117 and 306 to fix a Chrome version 29.0.1547.65 display issue. The bingo piece would not show up when you clicked on a square and the entire square would disappear.
As a result, if you clicked on any square on the right column, the first square on the left in the row below would jump up, staggering the display.

![screen shot 2013-09-12 at 11 32 06 am](https://f.cloud.github.com/assets/713778/1131832/83b01fd2-1bc0-11e3-8f56-a1fa1dc46557.png)
Now, the text will remain and the piece will appear beneath the text.