ACF layout improved (#644387)

The layout of ACFs with the new data field grid (see New layout for data fields (#641891)) has been improved. In the Admin Tool, the option New table has been renamed to New row (full width). If this option is selected for a field, the field is placed in a new row and spans all the columns of the ACF in the Web Client. This setting is convenient for tables (structs) used in ACFs.