Add button to delete page

CHDataManagement/Model/Content.swift

@@ -135,6 +135,18 @@ final class Content: ObservableObject {
         posts.remove(post)
     }
 
+    func remove(_ page: Page) {
+        pages.remove(page)
+        for post in posts {
+            if post.linkedPage == page {
+                post.linkedPage = nil
+            }
+        }
+        // TODO: Check for page links and other references in content
+    }
+
+    // MARK: Loading
+
     func file(withOutputPath: String) -> FileResource? {
         files.first { $0.absoluteUrl == withOutputPath }
     }