[WIP] Changed the RefactoringEngine#createRenameProcessor(IModelElement) method so that it avoid trying to rename a namespace. (Issue #48)
[WIP] Changed the RenamePHPElementActionDelegate#selectionChanged(IAction, ISelection) method so that renaming a file from the context menu works properly. (Issue #48)
[WIP] Changed the RenamePHPElementActionDelegate class so that the renameAction field is reset with an appropriate RenameAction object on the init(IWorkbenchWindow) and selectionChanged(IAction, ISelection) methods. (Issue #48)
[WIP] Added the RenamePHPElementActionDelegate#init(PHPStructuredEditor) method. (Issue #48)