Add tag overview, improve assets

CHDataManagement/Views/Files/FileSelectionView.swift

@@ -10,17 +10,32 @@ struct FileSelectionView: View {
 
     init(selectedFile: Binding<FileResource?>) {
         self._selectedFile = selectedFile
+        self.newSelection = selectedFile.wrappedValue
     }
 
+    @State
+    private var newSelection: FileResource?
+
     var body: some View {
         VStack {
-            FileListView(selectedFile: $selectedFile)
+            FileListView(selectedFile: $newSelection)
                 .frame(minHeight: 500, idealHeight: 600)
             HStack {
                 Button("Cancel") {
-                    selectedFile = nil
-                    dismiss() }
-                Button("Select") { dismiss() }
+                    DispatchQueue.main.async {
+                        dismiss()
+                    }
+                }
+                Button("Remove") {
+                    DispatchQueue.main.async {
+                        selectedFile = nil
+                        dismiss()
+                    }
+                }
+                Button("Select") {
+                    selectedFile = newSelection
+                    dismiss()
+                }
             }
         }
         .padding()