[UserConfigView] Add a unit test.
[UserConfigView][test] Add a test: test_index_without_session_id().
[UserConfigView][test] Remove optioinal messages that don't have a meaningful role.
[UserConfigView][test] Clean up.
[UserConfigView][test] Use constants instead of raw numbers to improve readability.
[UserConfigView][test] Use constants instead of raw numbers to improve readability.
[UserConfigView] Fix the wrong format of an input json object and the parsing code, which was added by mistake.
[UserConfigView] Delete one of the duplicated definition.
[UserConfigView] Add a new test: test_index_server_not_return_userinfo().
[forwardview] Fix a bug that uses the deleted constant in commit: d271a07fb9.
[UserConfig][view] Log information such as traceback on an exception.
[UserConfigView] use '__name__' as a logger name.

It is a recommended way in the following public documentation.

http://docs.djangoproject.jp/en/latest/topics/logging.html
[UserConfigView][test] Show logging messages in the console.
Merge branch 'master' of github.com:project-hatohol/hatohol