Allow users to refresh captcha when creating accounts
completed by: Thomas Lam
mentors: Jon Robson
See this bug report for more information:
Students are required to read Wikimedia's general instructions first. Patches should be submitted to Gerrit and reference the bug report in the commit message. ideally the solution should be added to the beta mode of the MobileFrontend extension to allow testing and quicker merging, repository maintainers can help with this during the code review process.