Room navigation : import join room strings

tools/localazy/config.json

@@ -233,6 +233,12 @@
       "includeRegex" : [
         "screen_room_directory_.*"
       ]
+    },
+    {
+      "name" : ":features:joinroom:impl",
+      "includeRegex" : [
+        "screen_join_room_.*"
+      ]
     }
   ]
 }