Add owner role and admin management controls

wwwroot/data/i18n/translations.json

@@ -124,13 +124,16 @@
     "admin.playerStatus": "Status",
     "admin.playerGames": "Games",
     "admin.playerJoker": "Joker",
+    "admin.playerAdmin": "Admin",
     "admin.playerDelete": "Delete",
+    "admin.owner": "owner",
     "admin.grantJokerChip": "Grant",
     "admin.statusSuggesting": "Suggesting",
     "admin.statusVoting": "Voting",
     "admin.statusFinished": "Finished",
     "admin.statusMoveToSuggest": "Move to Suggest",
     "admin.statusUpdated": "Player phase updated",
+    "admin.roleUpdated": "Admin role updated",
     "admin.deleteTitle": "Delete account?",
     "admin.deleteBody": "Delete player \"{name}\" and all their games and votes? This cannot be undone.",
     "admin.deleteConfirm": "Delete",
@@ -294,13 +297,16 @@
     "admin.playerStatus": "Status",
     "admin.playerGames": "Spiele",
     "admin.playerJoker": "Joker",
+    "admin.playerAdmin": "Admin",
     "admin.playerDelete": "Löschen",
+    "admin.owner": "owner",
     "admin.grantJokerChip": "Joker",
     "admin.statusSuggesting": "Vorschlagen",
     "admin.statusVoting": "Bewerten",
     "admin.statusFinished": "Fertig",
     "admin.statusMoveToSuggest": "Zur Vorschlagsphase",
     "admin.statusUpdated": "Spielerphase aktualisiert",
+    "admin.roleUpdated": "Admin-Rolle aktualisiert",
     "admin.deleteTitle": "Konto löschen?",
     "admin.deleteBody": "Spieler \"{name}\" samt Spielen und Stimmen löschen? Dies kann nicht rückgängig gemacht werden.",
     "admin.deleteConfirm": "Löschen",