Simple policy reasons for instance specific policies

src/i18n/en.json

@@ -13,6 +13,9 @@
       "mrf_policies_desc": "MRF policies manipulate the federation behaviour of the instance.  The following policies are enabled:",
       "simple": {
         "simple_policies": "Instance-specific policies",
+        "instance": "Instance",
+        "reason": "Reason",
+        "not_applicable": "N/A",
         "accept": "Accept",
         "accept_desc": "This instance only accepts messages from the following instances:",
         "reject": "Reject",

src/i18n/nl.json

@@ -670,6 +670,9 @@
       "mrf_policies": "Ingeschakelde MRF-regels",
       "simple": {
         "simple_policies": "Instantiespecifieke regels",
+        "instance": "Instantie",
+        "reason": "Reden",
+        "not_applicable": "n.v.t.",
         "accept": "Accepteren",
         "accept_desc": "Deze instantie accepteert alleen berichten van de volgende instanties:",
         "reject": "Afwijzen",