Add a mako.lookup.TemplateLookup instance into the Application.
Put the alias of urls.urls into the Application
Add initialize method for the BaseHandler to prepare.

It will create an alias of the application's template lookup now.
Make git to ignore the *.swp temporary file created by vim.
Add mako templates support.

Overrice the render_string method of the BaseHandler to support the mako
templates.
Add a empty config.py to prepare providing the config file support.

The git will only tack a copy of the config.py - config.py.sample to
protect developers' private config. So everyone should create their own
config.py according to the config.py.sample.