It is a CL to split the business logic of wuapplication.py and master_server.py. I just add corresponding files and copy what we want to split, without really integrate new classes into the codebase.

1) Split wuapllication.py into WuApplication in model and appmanager.py

2) Split some helper functions of master_server.py into sysmanager.py and util.py
Merge branch 'develop' of https://github.com/wukong-m2m/wukong-darjeeling into develop