FIX: Don’t translate TrustLevel name when generating links (#13588)

We want to put the name of the trust level in to generated URLs, not the human-readable form.

i.e.:

`/admin/users/list/newuser`

rather than:

`/admin/users/list/new user`

spec/models/report_spec.rb

@@ -352,6 +352,8 @@ describe Report do
         expect(report.data.find { |d| d[:x] == TrustLevel[0] }[:y]).to eq 3
         expect(report.data.find { |d| d[:x] == TrustLevel[2] }[:y]).to eq 2
         expect(report.data.find { |d| d[:x] == TrustLevel[4] }[:y]).to eq 1
+
+        expect(report.data.find { |d| d[:x] == TrustLevel[0] }[:url]).to eq '/admin/users/list/newuser'
       end
     end
   end