Fix breadcrumb and add test for locales (#49)

* test(unit): add test to check for locale consistency

* fix(breadcrumb): translate lessons route

lib/enhance-breadcrumb.js

@@ -2,7 +2,7 @@ module.exports = (request, resource) => {
   const breadcrumbs = request.app.locals.breadcrumb
 
   let enhancedBreadcrumbs = breadcrumbs.map((breadcrumb) => {
-    if (breadcrumb.label.replace(/ /g, '-') == resource.fields.slug) {
+    if (breadcrumb.label.replace(/ /g, '-') === resource.fields.slug) {
       breadcrumb.label = resource.fields.title
     }
     return breadcrumb