ihatemoney app has been fixed (#553)

* ihatemoney app has been fixed

- package has been updated to work with ynh 3.x
- fixed all errors reported by linter
- upstream has been upgraded (but not yet up to latest ihatemoney version)

community.json

@@ -662,9 +662,8 @@
     },
     "ihatemoney": {
         "branch": "master",
-        "level": 0,
-        "revision": "d2bd054afc857d5c1361a7bb0532e932a4d2a6c6",
-        "state": "notworking",
+        "revision": "HEAD",
+        "state": "working",
         "url": "https://github.com/YunoHost-Apps/ihatemoney_ynh"
     },
     "jappix": {