Better argument handler on project task_details - config.prompt_me_for_i...

hi,

Got a missing if on the for task_details.
Now it's working as intended the task arguments.
(I don't need to use task arguments now, just a normal one.)
That is what I already fixed though. I have this argument, with Prompt me for input is NOT checked:
![screen shot 2014-09-12 at 10 21 10 am](https://cloud.githubusercontent.com/assets/2227681/4251845/891f4de0-3a90-11e4-8ebf-2228493e2963.png)

And it doesn't ask me for it:
![screen shot 2014-09-12 at 10 22 54 am](https://cloud.githubusercontent.com/assets/2227681/4251867/aea1d88a-3a90-11e4-820c-88dd5aec9f9d.png)

Is there something different you're experiencing? If so, we need to find a better solution, because I don't see how your fix will solve it.