Escape control characters about kamaki HOT 2 CLOSED

Just to be precise, kamaki needs to escape anything that can be semantically identified as metadata. If something is semantically considered raw content, it should not be modified by recipients.

from kamaki.

This should be reverted.
It doesn't make sense to mangle the JSON string itself with "unicode_escape".

If you need to display or log strings which may contain control characters, this must happen at the point where the strings are to be shown to the user, or logged. It doesn't make sense to modify the response so early in the ResponseManager.

Please see:
https://stackoverflow.com/questions/9778550/which-is-the-correct-way-to-encode-escape-characters-in-python-2-without-killing

Finally, please review all instances of using "unicode_escape" that have been added after this commit.
They are probably broken and need to be replaced.

from kamaki.