Update js/flexigrid.js

Added template support
 
A template column can be added as follows:
{
    display: 'Headertext',
    template: '<a href="www.someurl/{1}">{0}</a>',
    name: 'CustomData',
    width: 200,
    sortable: true,
    align: 'left'
}
                
the data for the column can be a pipe delimited array of any length
data example:
{                   
     CustomData: mydata.SomeName + "||" + mydata.SomeKey
}