adding route /api/ping

alex

4 hours ago edcf6061e5efbe1b60bc1d17ff4bbe83ae866a09

 settings.prod.json

@@ -1,6 +1,7 @@
{
   "authtoken": "jiuGfr432898D90290kj4f45ldkfn3hh8F",
   "port": 4101,
   "restUrl": "https://www.lernen-mit-globus-baumarkt.de/popcorn",
   "db": {
      "host": "localhost",
      "port": 3306,