Add CyclOSM back for all (#290)

Use `pseudo_language_code` to keep it the default for French users, but not display the (wrong) language prefix in the layer tree.

layers/config/overrides.js

@@ -232,7 +232,7 @@ BR.confLayers.getPropertyOverrides = function() {
             'mapUrl': 'http://mapaszlakow.eu/#{zoom}/{lat}/{lon}'
         },
         'cyclosm': {
-            'language_code': 'fr',
+            'pseudo_language_code': 'fr',
             'nameShort': 'CyclOSM',
             'mapUrl': 'https://www.cyclosm.org/#map={zoom}/{lat}/{lon}/cyclosm'
         },

layers/config/tree.js

@@ -2,6 +2,7 @@ BR.confLayers.tree = {
     'base-layers': {
         'worldwide-international': [
             'standard',
+            'cyclosm',
             'OpenTopoMap',
             'Stamen.Terrain',
             'Esri.WorldImagery',