Merge remote-tracking branch 'origin/develop' into feature_adjust
Merge remote-tracking branch 'origin/develop' into feature_adjust
Modify all models.
Merge branch 'develop' into HEAD
Modify manage.py
  import mysql database driver.
Modify model classes.
 add create and update date.
Modify administaration view logging.
Modify view by model.
Modify urls.
Strengthening of a logging.
Merge remote branch 'origin/develop' into HEAD
Merge branch 'develop' into HEAD
Adjustment after merging.