[Fixed][UI][All] Correct background path.
[Fixed][Bugs][Expert & Admin] Correct load default value.
[Fixed][Bugs][Expert & Admin] Correct sql script about ch-zn 'N' place.
[Fixed][Bugs][SM] Correct msg display reversed
[Added][Func][All] Logout button and go back index button.
[Added][Func][Expert] Display already send comment.
Merge branch 'feature' into develop