Polish admin hub pages: drop duplicate headers, align CTAs and empties.

Remove redundant titles under AdminHubChrome, style events/polls create flows with admin chrome + i18n, and standardize empty states / teams form classes.

Co-authored-by: Cursor <[email protected]>

src/messages/nl.json

@@ -835,6 +835,26 @@
 					"cancel": "Annuleren"
 				}
 			},
+			"events": {
+				"newEvent": "+ Nieuw evenement",
+				"createTitle": "Evenement aanmaken",
+				"createSubtitle": "Plan een nieuw hotel-evenement"
+			},
+			"polls": {
+				"newPoll": "+ Nieuwe poll",
+				"createTitle": "Poll aanmaken",
+				"createSubtitle": "Maak een nieuwe community-poll of enquête"
+			},
+			"multiAccounts": {
+				"minAccounts": "Min. accounts per cluster",
+				"resultLimit": "Resultaatlimiet",
+				"refresh": "Vernieuwen",
+				"noClusters": "Geen clusters gevonden met de huidige drempels."
+			},
+			"devops": {
+				"noEmulatorErrors": "Geen emulatorfouten gevonden",
+				"noRecentErrors": "Geen recente fouten"
+			},
 			"tags": {
 				"title": "Tags",
 				"subtitle": "Artikel tags / categorieën",