MDL-55862 mod_data: Use proper name function for display.

The old method for displaying the name of a field was being
used. This meant that it was not possible to show a plugin's
name in view.php

Thanks to David Herney Bernal for providing a solution.

mod/data/field.php

@@ -296,7 +296,7 @@ if (($mode == 'new') && (!empty($newtype)) && confirm_sesskey()) {          ///
 
                 $table->data[] = array(
                     html_writer::link($displayurl, $field->field->name),
-                    $field->image() . ' ' . get_string($field->type, 'data'),
+                    $field->image() . ' ' . $field->name(),
                     $field->field->required ? get_string('yes') : get_string('no'),
                     shorten_text($field->field->description, 30),
                     html_writer::link($displayurl, $OUTPUT->pix_icon('t/edit', get_string('edit'))) .