[Admin] Add KS back

killswitches.json

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+{
+	"__COMMENT_READ_ME": "Do *NOT* commit this file to any branch other than `releases` !!! See docs/Killswitches.md",
+	"version": 1,
+	"last_updated": "2021-01-05",
+	"kill_switches": []
+}

killswitches_v2.json

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+{
+    "version": 2,
+    "last_updated": "18 October 2021",
+    "kill_switches": []
+}