add hide column feature to formhandler table - doesnot render the column in the first pain itself

Summary

Currently, to not display a column in formhandler table, developers have to not mention it in columns. But when * is given as a name, it displays all columns. No way developer could not render specific columns.

Benefits

Admin module requires this.

Usage

$('.hide_col')
        .formhandler({
          columns: [
            { name: '*'},
            {
              name: 'Continent',
              hide: true
            }
          ]
        })