Add license text & update comments in SWTBot test

Amends 7c195df

org.eclipse.m2e.swtbot.tests/src/org/eclipse/m2e/pde/ui/MavenTargetDependencyEditorTest.java

@@ -1,3 +1,15 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Patrick Ziegler and others.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * https://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ * Patrick Ziegler - initial API and implementation
+ *******************************************************************************/
 package org.eclipse.m2e.pde.ui;
 
 import static org.junit.Assert.assertEquals;
@@ -224,8 +236,8 @@ public void testAddMavenLocation() throws Exception {
 
  assertFalse(robot.button("Update").isEnabled());
  assertFalse(robot.button("Finish").isEnabled());
- // There is no elegant way to select the cell editor,
- // but we know that opening it focuses the text widget
+ // There is no elegant way to select the cell editor, but we
+ // know that it will be the first text widget in the dialog.
  table.click(19, 0);
  robot.text(0).setText("org.apache.commons");
  table.click(19, 1);
@@ -400,7 +412,7 @@ public void testColumnSorting() throws Exception {
  table.header("Artifact Id").click();
  assertEquals(table.cell(0, 1), "caffeine");
 
- // Sort by Artifact Id
+ // Sort by Group Id
  table.header("Group Id").click();
  assertEquals(table.cell(0, 1), "jackson-annotations");