Update file image_captcha_refresh.js to return "false" due to JSON error.
The image_captcha_refresh.js was changed in 2.0.7 to return "FALSE" instead of "false" which causes a JSON error (can only handle lowercase booleans). Closes #3489166
The image_captcha_refresh.js was changed in 2.0.7 to return "FALSE" instead of "false" which causes a JSON error (can only handle lowercase booleans). Closes #3489166