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.

js/LayersConfig.js

@@ -88,7 +88,7 @@ BR.LayersConfig = L.Class.extend({
             var id = BR.confLayers.languageDefaultLayers[i];
             var layer = BR.layerIndex[id];
             if (layer) {
-                var layerLanguage = layer.properties['language_code'];
+                var layerLanguage = layer.properties['language_code'] || layer.properties['pseudo_language_code'];
                 if (layerLanguage) {
                     languageLayersMap[layerLanguage] = id;
                 }

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',