Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: Ied3a4c392cf2ea16c6e858a1baaf9790db95e1f4

i18n/or.json

@@ -0,0 +1,14 @@
+{
+    "@metadata": {
+        "authors": [
+            "Ansumang",
+            "Odisha1",
+            "Psubhashish"
+        ]
+    },
+    "contributionscores-allrevisions": "ସବୁ ବେଳେ",
+    "contributionscores-score": "ସ୍କୋର",
+    "contributionscores-pages": "ପୃଷ୍ଠା",
+    "contributionscores-changes": "ବଦଳସବୁ",
+    "contributionscores-username": "ବ୍ୟବହାରକାରୀଙ୍କ ନାମ"
+}