Fix for issue #15: Configure and implement filter for table

[edgarmueller]

No description provided.

[edgarmueller]

Fixes filtering by directly wiring through ui-grid options to ui-grid.

• if useExternalFiltering is enabled, the DataProvider's filter method will be called
• if enableFiltering is set, default internal filtering is done

Both options can be set to false to completly disable filtering.

[eneufeld]

can the existingOptions parameter be undefined/null here? if so both static method should handle this correctly

[edgarmueller]

It shouldn't be because defaultGridOptions is called with element.options || {}

[eneufeld]

Thank you, looks good, just some questions

[edgarmueller]

Thanks for the review, I will push an update later today.

[eneufeld]

Thanks for the clarification

[eneufeld]

Looks good, thanks for the great work.
Just add a test for the table so the coverage check doesn't fail.