improvement: task assignment notif added to notifications feature.

frontend/messages/en.json

@@ -761,6 +761,7 @@
     "activityClinicComment": "{actor}: “{preview}” · {date}",
     "activityLabComment": "{actor}: “{preview}” · {date}",
     "activityTaskCompleted": "{step} completed by {actor} · {date}",
+    "activityTaskAssigned": "{step} assigned by {actor} · {date}",
     "activityCaseImportant": "Marked important by {actor} · {date}",
     "activityCaseAmended": "Case updated by {actor} · {date}",
     "activityGeneric": "Update · {date}",

frontend/messages/fa.json

@@ -762,6 +762,7 @@
     "activityClinicComment": "{actor}: «{preview}» · {date}",
     "activityLabComment": "{actor}: «{preview}» · {date}",
     "activityTaskCompleted": "{step} توسط {actor} تکمیل شد · {date}",
+    "activityTaskAssigned": "{step} توسط {actor} اختصاص داده شد · {date}",
     "activityCaseImportant": "مهم علامت‌گذاری شد توسط {actor} · {date}",
     "activityCaseAmended": "پرونده به‌روزرسانی شد توسط {actor} · {date}",
     "activityGeneric": "به‌روزرسانی · {date}",

frontend/messages/nl.json

@@ -761,6 +761,7 @@
     "activityClinicComment": "{actor}: “{preview}” · {date}",
     "activityLabComment": "{actor}: “{preview}” · {date}",
     "activityTaskCompleted": "{step} voltooid door {actor} · {date}",
+    "activityTaskAssigned": "{step} toegewezen door {actor} · {date}",
     "activityCaseImportant": "Als belangrijk gemarkeerd door {actor} · {date}",
     "activityCaseAmended": "Case bijgewerkt door {actor} · {date}",
     "activityGeneric": "Update · {date}",