Widgets: Improve notice in Text widget's legacy mode.

Retains 'new' in notice on 4.8 branch, in contrast with [41134]. Also fixes phpunit test which broke in [41132].

Merges [41134] onto 4.8 branch.
Props melchoyce, westonruter.
See #41394, #35243, #40951, #40907.
Fixes #41386 for 4.8.1.

Built from https://develop.svn.wordpress.org/branches/4.8@41135


git-svn-id: http://core.svn.wordpress.org/branches/4.8@40975 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8.1-beta1-41133';
+$wp_version = '4.8.1-beta1-41135';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-includes/widgets/class-wp-widget-text.php

@@ -360,7 +360,11 @@ class WP_Widget_Text extends WP_Widget {
 				<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>"/>
 			</p>
 			<div class="notice inline notice-info notice-alt">
+				<?php if ( ! isset( $instance['visual'] ) ) : ?>
 					<p><?php _e( 'This widget may contain code that may work better in the new &#8220;Custom HTML&#8221; widget. How about trying that widget instead?' ); ?></p>
+				<?php else : ?>
+					<p><?php _e( 'This widget may have contained code that may work better in the new &#8220;Custom HTML&#8221; widget. If you haven&#8217;t yet, how about trying that widget instead?' ); ?></p>
+				<?php endif; ?>
 			</div>
 			<p>
 				<label for="<?php echo $this->get_field_id( 'text' ); ?>"><?php _e( 'Content:' ); ?></label>