Added support for non-string jQuery selectors to Sijax.getFormValues().
Added support for non-string jQuery selectors to Sijax.getFormValues().

`Sijax.getFormValues('#formId')` has always worked.
You can now also use something like `Sijax.getFormValues($('body').find('form'))`
or `Sijax.getFormValues($(this))` for example.

spantaleev/sijax,spantaleev/sijax