HTML Widgets; Grids; Column sorter font now standardised

Changing the base font on an HTML Widget or Portal could affect the "sorter" arrows that appear at the top of sortable grid columns.

These have now been standardised to use the FontAwesome font and are therefore consistent regardless of the base font.

This change has also been made to non-HTML Widget grids within finPOWER Connect Cloud, e.g., the Client form, Logs page.