add handler for Http Response code - 204 No Content

[hnhegde]

Hello,
This PR is w.r.t. DataTables forum discussion on handling HTTP 204 - No Content responses.
Full discussion is here.
Issue: With ajax sourced data, when response received is 204, then dataTables throws following error:

at Object.success (jquery.dataTables.js:3888) 
at fire (jquery.js:3291) 
at Object.fireWith [as resolveWith] (jquery.js:3421) 
at done (jquery.js:9533) 
at XMLHttpRequest.<anonymous> (jquery.js:9785)```

Proposed solution: If response returned is a null object and http status is 204, then intercept the null object and return a blank json dict object instead. 

[DataTables]

Thanks for this! I've actually got this in the 2 branch already.

[hnhegde]

Thanks for this! I've actually got this in the 2 branch already.

Hi @DataTables, any idea when 2.0 will be out? I am now managing this fix manually in 1.10.
Regards,
Harsha

[DataTables]

Probably sometime in 2020, but no firm date yet while we are working on other aspects of the software I'm afraid.