Allow to define named templates

[OlegKi]

Hello Tony,

If one loads colModel from the server it's very practical to have properties which can be represented in JSON. If one want to use dataIni or other callbacks (for jQuery UI Datepicker, select2 or other controls) one can't load such column definition via JSON. jqGrid contains already practical feature in formatters. Formatters allow to extent $.fn.fmatter and assign string name to custom formatter and extend $.unformat to register the corresponding unformatter. In the way one can easy extend the list of predefined formatters.

jqGrid supports template property of colModel starting from version 3.8.2, but the value have to be an object. I suggest to make small modification of the code to allow to use for example template: "number". To define number template one need just define $.jgrid.cmTemplate.number using

$.extend($.jgrid, {
    cmTemplate: {
        number: {
            formatter: "number", align: "right", sorttype: "number", searchoptions: { sopt: ["eq", "ne", "lt", "le", "gt", "ge"] }
        }
    }
});

I think that such small change can makes long code which uses jqGrid more small and more easy to maintain.

The demo demonstrates the usage of jqGrid after applying of suggested pull request.

You can consider to define some standard templates for numbers, intergers and dates at the beginning of grid.base.js.

Best regards
Oleg