Improve content saving, label editing

CHDataManagement/Model/ContentLabel.swift

@@ -1,17 +1,10 @@
 import Foundation
 
-final class ContentLabel: ObservableObject {
+struct ContentLabel {
 
-    @Published
     var icon: PageIcon
 
-    @Published
     var value: String
-
-    init(icon: PageIcon, value: String) {
-        self.icon = icon
-        self.value = value
-    }
 }
 
 extension ContentLabel: Equatable {
@@ -34,7 +27,7 @@ extension ContentLabel {
         .init(icon: icon.rawValue, value: value)
     }
 
-    convenience init?(context: LoadingContext, data: Data) {
+    init?(context: LoadingContext, data: Data) {
         guard let icon = PageIcon(rawValue: data.icon) else {
             context.error("Unknown label icon '\(data.icon)'")
             return nil