Bug 299210 [CommonNavigator] Test improvements
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/NavigatorTestBase.java
public static final String TEST_CONTENT = "org.eclipse.ui.tests.navigator.testContent";
	public static final String TEST_CONTENT2 = "org.eclipse.ui.tests.navigator.testContent2";	
	public static final String TEST_CONTENT_OVERRIDDEN1 = "org.eclipse.ui.tests.navigator.testContentOverridden1";
	public static final String TEST_CONTENT_OVERRIDDEN2 = "org.eclipse.ui.tests.navigator.testContentOverridden2";
	public static final String TEST_CONTENT_OVERRIDE1 = "org.eclipse.ui.tests.navigator.testContentOverride1";
	public static final String TEST_CONTENT_OVERRIDE2 = "org.eclipse.ui.tests.navigator.testContentOverride2";
	public static final String TEST_CONTENT_OVERRIDE2_BLANK = "org.eclipse.ui.tests.navigator.testContentOverride2Blank";
	
	public static final String TEST_CONTENT_LABEL1 = "org.eclipse.ui.tests.navigator.testContentLabel1";
	public static final String TEST_CONTENT_LABEL2 = "org.eclipse.ui.tests.navigator.testContentLabel2";
	
	public static final String TEST_CONTENT_SORTER_MODEL = "org.eclipse.ui.tests.navigator.testContentSorterModel";
	public static final String TEST_CONTENT_SORTER_MODEL_OVERRIDE = "org.eclipse.ui.tests.navigator.testContentSorterModel.override";
	public static final String TEST_CONTENT_SORTER_MODEL_OVERRIDE_NOSORT = "org.eclipse.ui.tests.navigator.testContentSorterModel.override.nosort";
	public static final String TEST_CONTENT_SORTER_RESOURCE = "org.eclipse.ui.tests.navigator.testContentSorterResource";
	public static final String TEST_CONTENT_SORTER_RESOURCE_OVERRIDE = "org.eclipse.ui.tests.navigator.testContentSorterResource.override";
	public static final String TEST_CONTENT_SORTER_RESOURCE_OVERRIDE_SORTER = "org.eclipse.ui.tests.navigator.testContentSorterResource.override.sorter";
	public static final String TEST_CONTENT_REDLABEL = "org.eclipse.ui.tests.navigator.testContentRedLabel";
	public static final String TEST_CONTENT_MISSINGLABEL = "org.eclipse.ui.tests.navigator.testContentMissingLabel";
	public static final String TEST_CONTENT_DROP_COPY = "org.eclipse.ui.tests.navigator.testContentDropCopy";
	public static final String TEST_CONTENT_HAS_CHILDREN = "org.eclipse.ui.tests.navigator.testContentHasChildren";
	public static final String TEST_CONTENT_ACTION_PROVIDER = "org.eclipse.ui.tests.navigator.testContentActionProvider";
	
	public static final String TEST_CONTENT_TRACKING_LABEL = "org.eclipse.ui.tests.navigator.testTrackingLabel";
	public static final String TEST_CONTENT_JST = "org.eclipse.ui.tests.navigator.jst.ContentProvider";
	protected static final String TEST_ACTIVITY = "org.eclipse.ui.tests.navigator.testActivity";
	protected static final String TEST_ACTIVITY_PROVIDER = "org.eclipse.ui.tests.navigator.testActivityProvider";
	public static final String TEST_ACTION_PROVIDER_PRIORITY = "org.eclipse.ui.tests.navigator.extension.TestActionProviderPriority";