Declare proxy as stable and enable by default

Change-Id: I06c574831d5ba7afa9948dfd54885d76774e7a2e
diff --git a/lib/Kalamar.pm b/lib/Kalamar.pm
index e5553a0..6f83103 100644
--- a/lib/Kalamar.pm
+++ b/lib/Kalamar.pm
@@ -290,10 +290,8 @@
   $r->get('/contact')->mail_to_chiffre('documentation#contact');
 
   # API proxy route
-  if ($conf->{experimental_proxy}) {
-    $r->any('/api/v#apiv' => [apiv => ['1.0']])->name('proxy')->to('Proxy#pass');
-    $r->any('/api/v#apiv/*path' => [apiv => ['1.0']])->to('Proxy#pass');
-  }
+  $r->any('/api/v#apiv' => [apiv => ['1.0']])->name('proxy')->to('Proxy#pass');
+  $r->any('/api/v#apiv/*path' => [apiv => ['1.0']])->to('Proxy#pass');
 
   # Match route
   # Corpus route