[TASK] Multilingual support for error message

Change-Id: Ib7bc836015e57c2ed8d91d1ce99527f4b3ad132a
[TASK] Added settings for captcha background image

Change-Id: Ic94cd35d5d7f56e78005af6ac91554abeaf313bb
[TASK] Upgraded Captcha to work with Neos Alpha 6

Upgraded Captcha to work with Neos Alpha 6

Resolves: #16513
Sprint: 2013-44

Change-Id: Ief7db9d12505e307cfee49a0e2863cbbdfe6bd0a