Allow additional Editor capabilities in Wordpress admin. Allow editors to manage Widgets and Menus. Allow editors to manage Users below Editor level.

editor-capabilities.php

/************* EDITOR ACCESS *****************/

// Allow editors to manage Widgets and Menus
function sp_editor_capabilities() {
	$editor = get_role( 'editor' );

	if (!$editor->has_cap( 'edit_theme_options' ) ) {
	  $editor->add_cap( 'edit_theme_options' );
	}

	if (!$editor->has_cap( 'wpml_manage_string_translation' ) ) {
	  $editor->add_cap( 'wpml_manage_string_translation' );
	}

	if (!$editor->has_cap( 'wpml_manage_taxonomy_translation' ) ) {
	  $editor->add_cap( 'wpml_manage_taxonomy_translation' );
	}
}
add_action('admin_head', 'sp_editor_capabilities');

// Allow editors to manage Users below Editor level
function sp_hide_menu() {
	$user = new WP_User(get_current_user_id());

	if (!empty( $user->roles) && is_array($user->roles)) {
		foreach ($user->roles as $role)
		$role = $role;
	}

	if($role == "editor") {
		remove_menu_page( 'tools.php' );
		remove_submenu_page( 'themes.php', 'themes.php' );
		remove_submenu_page( 'themes.php', 'customize.php' );
		global $submenu;
		unset($submenu['themes.php'][6]);
	}
}
add_action('admin_head', 'sp_hide_menu');