Configure many BIS legacy domains on transition tool

This pull request contains the configuration of many (but not all) BIS legacy domains on the transition tool. 

Additionally, it allows for previously configured domains to use the global append path feature where appropriate.

[Here](https://gist.github.com/rjc123/a69ddcf71c284ec64716) is the output from the [domain checker](https://github.com/alphagov/redirector/blob/master/tools/domain_check.sh) for these domains. 
I would go on spamming, but you probably get the gist, @rjc123. ;-) I'm assuming now that they're fine, given there are so many.