Proxito: check for forced redirects before system redirects

[stsewd]

What's the problem this feature will solve?

Currently, we do our system redirects (/ -> /en/latest/, /en/latest -> /en/latest/, etc), and after all those redirects have been done we check for forced redirects. This is a problem when you want to move a whole project to another domain, since then you'll need to create a forced redirect for /en/latest/, when you may not want that.

Describe the solution you'd like

Forced redirects should be checked before doing system redirects.

Alternative solutions

Create several forced redirects for each system redirect.