Templates of the Grid

date_grid	specifies the content of columns that show dates (return Date values) in grid
grid_blank	specifies the custom content inserted before the labels of child items in the tree column
grid_date_format	specifies the format of dates for the columns that show dates (return the Date values)
grid_file	specifies the icon of child items in the tree column
grid_folder	specifies the icon of parent items in the tree column
grid_header_class	specifies the CSS class that will be applied to the headers of the table's columns
grid_indent	specifies the indent of the child items in a branch (in the tree column)
grid_open	specifies the icon of the open/close sign in the tree column
grid_row_class	specifies the CSS class that will be applied to a grid row