Bug 64819 [Activities] [Preferences] The term activities is still used in the preferences
Windows>Preferences>Workbench page has the option: "Prompt when enabling _activities_" activities should be changed to _capabilities_. Also since there is now a separate "Capabilities" preference page I suggest to move this option to this page.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEWorkbenchPreferencePage.java
long interval = description.getSnapshotInterval() / 60000;
        saveInterval.setStringValue(Long.toString(interval));
        saveInterval.setPropertyChangeListener(new IPropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent event) {
                if (event.getProperty().equals(FieldEditor.IS_VALID))
                        setValid(saveInterval.isValid());
            }
        });
    }
    /**
     * Returns the IDE preference store.
     * @return the preference store.
     */
    protected IPreferenceStore getIDEPreferenceStore() {
        return IDEWorkbenchPlugin.getDefault().getPreferenceStore();
    }
    /**
     * The default button has been pressed.
     */
    protected void performDefaults() {
        
        boolean autoBuild = ResourcesPlugin.getPlugin().getPluginPreferences()
                .getDefaultBoolean(ResourcesPlugin.PREF_AUTO_BUILDING);
        autoBuildButton.setSelection(autoBuild);
        IPreferenceStore store = getIDEPreferenceStore();
        autoSaveAllButton
                .setSelection(store
                        .getDefaultBoolean(IDEInternalPreferences.SAVE_ALL_BEFORE_BUILD));
        saveInterval.loadDefault();