Support StringComparison options for filtering

[sanderweltje]

When filtering on a type string the filter is case sensitive. Is it possible to support System.StringComparison so I can use InvariantCultureIgnoreCase. For example:

• Extend the function GridDataProviderRequest.ApplyTo() with an extra parameter System.StringComparison
• Add a FilterSelector option similar as done for sorting SortKeySelector. Custom filter logic can be added this way

[gvreddy04]

@gvreddy04 Apply the same feature for both AutoComplete and Grid.

[sanderweltje]

Works like a charm, thanks!