update FakeBrowser and FakeBrowserTest.
change Http::Object and Http::UIObject behavior
- change Http::Object become mongoose wrapper object.
- change Request rule of Http::UIObject
  - remove prefix rule of request - static, common, do, x.
  - every GET request return static files.
    - find document root first, and common root next.
    - if there is no file both of document root and common root, return 404.
  - every POST request pass query to device, and wait return.
    - need to solve Request object life cycle crash.