Tracks sample page w/ modal

ref #23

src/locales/en.json

@@ -51,5 +51,11 @@
   "credits": "Credits",
   "count_organizations": "# Organizations",
   "count_teams": "# Teams",
-  "general_promise_error": "😢 Error"
+  "general_promise_error": "😢 Error",
+  "add-your-first-track": "Add your first track",
+  "no-tracks-added-yet": "there are no tracks added yet.",
+  "track-length-in-m": "Track length in m",
+  "track-name": "Track name",
+  "please-provide-the-required-information-to-add-a-new-track": "Please provide the required information to add a new track.",
+  "create-a-new-track": "Create a new Track"
 }