HTML Widgets; Grids; Checkboxes in row selectors are now round

Checkboxes in HTML Widget Grid row selectors, e.g., in the Client Bank Account Change wizard were easily confused with checkboxes in cells.

Therefore, the styling has been changed to make these checkboxes rounded so they are easily distinguishable.

This change has also been made to finPOWER Connect Cloud grids such as those used in Smart Lists in the Tasks view.