[TYPO3-core] RFC #16971: Improve ExtDirect error handling

[Steffen Kamper]

Hi Stefan,

great improvement indeed :)

Just with the text of the message i think it's not such clear. Mostly 
this happens if an error (like php error) happened. Then the error 
message is printed in response, and of course this leeds to a json error.

So i would like to get the text from response displayed in debug 
console. If there is no such text, your message is the right one as then 
there is a real timeout.

vg Steffen