TinyMCE: enhance the inline toolbar for images:

- Add alignment (left, center, right, none) buttons.
- Position the menu above the image when possible, except on iOS.
- Fix selecting images on iOS.
First run, part props avryl. See #30147.

git-svn-id: https://develop.svn.wordpress.org/trunk@30318 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-editor.php

@@ -957,6 +957,7 @@ final class _WP_Editors {
 			'Insert Read More tag' => __( 'Insert Read More tag' ),
 			'Read more...' => __( 'Read more...' ), // Title on the placeholder inside the editor
 			'Distraction Free Writing' => __( 'Distraction Free Writing' ),
+			'Remove Alignment' => __( 'Remove alignment' ), // Tooltip for the 'alignnone' button in the image toolbar
 		);
 
 		/**