WL-2771 Improve the text when creating a re-direct.
WL-2771 Default to appending the path to redirect.

This took far too long. The crucial bit is: org.springframework.web.bind.WebDataBinder#fieldMarkerPrefix which by default is set to an underscore and allows you to unset boolean checkboxes by putting a second input in the page.
Merge pull request #13 from ox-it/WL-2771

WL-2771 Improve page when adding redirect