[Web] Allow ratelimit time frame "day"; Allow to create announcements

data/web/lang/lang.en.json

@@ -286,6 +286,15 @@
         "transport_maps": "Transport Maps",
         "transports_hint": "→ A transport map entry <b>overrules</b> a sender-dependent transport map</b>.<br>\r\n→ Outbound TLS policy settings per-user are ignored and can only be enforced by TLS policy map entries.<br>\r\n→ The transport service for defined transports is always \"smtp:\".<br>\r\n→ Addresses matching \"/localhost$/\" will always be transported via \"local:\", therefore a \"*\" destination will not apply to those addresses.<br>\r\n→ To determine credentials for an exemplary next hop \"[host]:25\", Postfix <b>always</b> queries for \"host\" before searching for \"[host]:25\". This behavior makes it impossible to use \"host\" and \"[host]:25\" at the same time.",
         "ui_footer": "Footer (HTML allowed)",
+        "ui_header_announcement": "Announcements",
+        "ui_header_announcement_active": "Set announcement active",
+        "ui_header_announcement_content": "Text (HTML allowed)",
+        "ui_header_announcement_help": "The announcement is visible for all logged in users and on the login screen of the UI.",
+        "ui_header_announcement_select": "Select announcement type",
+        "ui_header_announcement_type": "Type",
+        "ui_header_announcement_type_info": "Info",
+        "ui_header_announcement_type_warning": "Important",
+        "ui_header_announcement_type_danger": "Very important",
         "ui_texts": "UI labels and texts",
         "unban_pending": "unban pending",
         "unchanged_if_empty": "If unchanged leave blank",