repoTrans(): read lang from repository

src/OpenStreetBrowserLoader.js

@@ -61,7 +61,6 @@ OpenStreetBrowserLoader.prototype.getCategory = function (id, options, callback)
     this.getCategoryFromData(ids.id, opt, repoData.categories[ids.entityId], function (err, category) {
       if (category) {
         category.setMap(this.map)
-        category.lang = repoData.lang
       }
 
       callback(err, category)

src/Repository.js

@@ -2,5 +2,7 @@ module.exports = class Repository {
   constructor (id, data) {
     this.id = id
     this.data = data
+
+    this.lang = this.data.lang || {}
   }
 }

src/tagTranslations.js

@@ -26,7 +26,7 @@ OverpassLayer.twig.extendFunction('isTranslated', function (str) {
   return tagTranslationsIsTranslated(str)
 })
 OverpassLayer.twig.extendFunction('repoTrans', function (str) {
-  let lang = global.currentCategory.lang
+  let lang = global.currentCategory.repository.lang
   return str in lang ? lang[str] : str
 })