Show cc/bcc default was changed

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -425,6 +425,7 @@ public class FragmentCompose extends FragmentBase {
                 onMenuAddresses();
                 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
                 prefs.edit().putBoolean("cc_bcc", grpAddresses.getVisibility() == View.VISIBLE).apply();
+                ToastEx.makeText(v.getContext(), R.string.title_default_changed, Toast.LENGTH_LONG).show();
                 return true;
             }
         });

app/src/main/res/values/strings.xml

@@ -1306,6 +1306,7 @@
     <string name="title_enabled">Enabled</string>
     <string name="title_executing">Executing</string>
     <string name="title_completed">Completed</string>
+    <string name="title_default_changed">Default changed</string>
     <string name="title_clipboard_copy">Copy to clipboard</string>
     <string name="title_clipboard_copied">Copied to clipboard</string>
     <string name="title_ask_what">Ask what to do</string>