Add preventDefault() to double-click events to prevent selecting text.

[bobbintb]

I have a double click event set for a row. The problem it that if a user double clicks on a part of the row that has text, it selects the text as that is the default browser action. I checked the documentation and there is no way to suppress this for any of the four double-click events, though there is for the two right-click context menu. I think adding preventDefault() to double-click events would be useful as well.