Hide the vault wipe option in the menu of the import activity

Always showing the dialog can be confusing for users.

app/src/main/java/com/beemdevelopment/aegis/ui/ImportEntriesActivity.java

@@ -40,6 +40,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class ImportEntriesActivity extends AegisActivity {
+    private Menu _menu;
     private ImportEntriesAdapter _adapter;
     private FabScrollHelper _fabScrollHelper;
 
@@ -70,7 +71,8 @@ public class ImportEntriesActivity extends AegisActivity {
 
         FloatingActionButton fab = findViewById(R.id.fab);
         fab.setOnClickListener(v -> {
-            if (getApp().getVaultManager().getEntries().size() > 0) {
+            if (getApp().getVaultManager().getEntries().size() > 0
+                    && _menu.findItem(R.id.toggle_wipe_vault).isChecked()) {
                 showWipeEntriesDialog();
             } else {
                 saveAndFinish(false);
@@ -243,7 +245,8 @@ public class ImportEntriesActivity extends AegisActivity {
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.menu_import_entries, menu);
+        _menu = menu;
+        getMenuInflater().inflate(R.menu.menu_import_entries, _menu);
         return true;
     }
 
@@ -256,6 +259,9 @@ public class ImportEntriesActivity extends AegisActivity {
             case R.id.toggle_checkboxes:
                 _adapter.toggleCheckboxes();
                 break;
+            case R.id.toggle_wipe_vault:
+                item.setChecked(!item.isChecked());
+                break;
             default:
                 return super.onOptionsItemSelected(item);
         }

app/src/main/res/menu/menu_import_entries.xml

@@ -5,4 +5,8 @@
         android:icon="@drawable/ic_done_all_black_24dp"
         android:title="@string/toggle_checkboxes"
         app:showAsAction="always" />
+    <item android:id="@+id/toggle_wipe_vault"
+        android:title="@string/dialog_wipe_entries_checkbox"
+        android:checkable="true"
+        app:showAsAction="never" />
 </menu>