Fix password reset link [MJ-646]

@fezick wants this to go out as a hotfix. Don't delete the branch once any issues have been fixed and it's been merged - we also need to merge it to working-master.

I tried fixing this by changing the Site domain to secure.my.jobs and changing our context processor to use domain rather than site_domain, which is what the stock password reset template expects, but it did not work.

I solved it by including the stock template and just changing the url.

All tests pass, besides the one that is fixed in working-master.