0821 upload Img OK
Merge branch 'lowlow'

Conflicts:
	src/nthu/qrcode/mvc/control/ContactController.java
0822 upload filr
Merge branch 'lowlow'
0823 blackList
0825 db psw change
0825 blackList > many
0825 mysql acc psw
0826 contact del -> more than 1 pubIdB