fix: redirect for translate.todotxt.org

[karbassi]

From @ginatrapani on October 9, 2017 21:12

Used to point to: https://crowdin.com/project/todotxt-touch-android

Copied from original issue: todotxt/todo.txt-android#489

[karbassi]

@ginatrapani Do you want me to log into the domain name provider or NS provider and do a DNS redirect for you?

Moreover, it might be a good idea to have the URL point to http://todotxt.org/translate/ that way we can redirect that to crowdin.com via the GitHub page. The reason for that idea is that if we need to redirect to another URL later, we can do that via Github pages rather than DNS.