Manual binding for TextEditor,TextField,Application,Window

Manual binding for TextEditor,TextField,Application,Window

Here are changes:
1. Add EnableSelection,Placeholder property for TextEditor;
2. Add EnableSelection,Placeholder for TextField;
3. Add WindowSize,WindowPosition property for window;
4. Add a new constuctor for Application;
5. Rpdate Resized event argument for Window;
6. Fix a dispose issue of ImageView.

Change-Id: I34280cba24fdb28cfbaa5bc160350a579efe0358