Fix not working with Oxygen, cleanup dependencies

Fix Issue #15

Author: EngelthalerZAT

pm.eclipse.editbox/META-INF/MANIFEST.MF

@@ -6,8 +6,5 @@ Bundle-Version: 0.70.0.qualifier
 Bundle-Activator: pm.eclipse.editbox.EditBox
 Bundle-Vendor: Nodeclipse
 Require-Bundle: org.eclipse.ui,
- org.eclipse.core.runtime,
- org.eclipse.ui.editors,
- org.eclipse.jface.text,
- org.eclipse.jdt.ui
+ org.eclipse.core.runtime
 Eclipse-LazyStart: true

pm.eclipse.editbox/src/pm/eclipse/editbox/impl/BoxSettingsStoreImpl.java

@@ -174,7 +174,7 @@ protected void setFileNames(Collection<String> fileNames) {
 	 */
 	protected Collection<String> getFileNames() {
 		String fileNames = store.getString(providerKey(FILE_NAMES));
-		if (fileNames == null) {
+		if (fileNames == null || fileNames.equals("")) {
 			return null;
 		}		
 		List<String> list = new ArrayList<String>();