Create training plan feedback controller.
Update feedback.
Adjust css for user todo list.
continue implement training plan process.
Merge branch 'master' of https://github.com/jasli2/evolution
Add notification model.
Merge pull request #20 from hutuxiansheng/master

add reply comment view
Add user class progress.
Merge branch 'master' of https://github.com/jasli2/evolution
Add publish action to training plan which can publish training plan.
prepare to show views based on training plan state.
Add notification to view.
Merge branch 'master' of https://github.com/jasli2/evolution
start implement course state.
Merge branch 'master' of https://github.com/jasli2/evolution
fix utf8 error
Add state machine for course class.
Add course class controller.
add model examination relations
merge jasli2 branch