Docs: Improve JSDoc for `language-chooser.js`.

Props ireneyoast, manuelaugustin.
Fixes #43950.

Built from https://develop.svn.wordpress.org/trunk@43334


git-svn-id: http://core.svn.wordpress.org/trunk@43162 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/language-chooser.js

@@ -1,5 +1,8 @@
 jQuery( function($) {
-
+/*
+ * Set the correct translation to the continue button and show a spinner
+ * when downloading a language.
+ */
 var select = $( '#language' ),
 	submit = $( '#language-continue' );
 
@@ -8,6 +11,10 @@ if ( ! $( 'body' ).hasClass( 'language-chooser' ) ) {
 }
 
 select.focus().on( 'change', function() {
+	/*
+	 * When a language is selected, set matching translation to continue button
+	 * and attach the language attribute.
+	 */
 	var option = select.children( 'option:selected' );
 	submit.attr({
 		value: option.data( 'continue' ),
@@ -16,8 +23,7 @@ select.focus().on( 'change', function() {
 });
 
 $( 'form' ).submit( function() {
-	// Don't show a spinner for English and installed languages,
-	// as there is nothing to download.
+	// Show spinner for languages that need to be downloaded.
 	if ( ! select.children( 'option:selected' ).data( 'installed' ) ) {
 		$( this ).find( '.step .spinner' ).css( 'visibility', 'visible' );
 	}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43333';
+$wp_version = '5.0-alpha-43334';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.