Added support for IE's handling of 204 status codes where it returns 1223 instead of 204. #9
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IE 8 and 9 can not handle HTTP responses with status code 204 (No Content) properly. Code 1223 will be used instead.
Now, when this happens, we map it to 204.
This is a know bug, which is fixed in IE10 and is documented here: http://stackoverflow.com/questions/10046972/msie-returns-status-code-of-1223-for-ajax-request
I've tested this in IE 8 & 9.