Make the json data always be actual json instead of a pythonish dict() blob.
Make the json data always be actual json instead of a pythonish dict() blob.

Also rationalizes the two messages while we're at it.

R=agable@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/20521004

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@215066 0039d316-1c4b-4281-b951-d872f2087c98

luci/recipes-py,luci/recipes-py,shishkander/recipes-py,shishkander/recipes-py