auto restore last attempt training

![screen shot 2014-09-07 at 22 55 35](https://cloud.githubusercontent.com/assets/4983239/4178625/2f710756-369f-11e4-837b-8bb14d17017b.png)

1. If a student haven't done a coding question, his code will be saved and auto restore next time.

2.provide a button if he wants to revert to the template code

3.UI is not beautiful.. need improve
All removed.

On Wed, Sep 10, 2014 at 10:01 PM, Raymoond Tang <notifications@github.com>
wrote:

> In app/assets/javascripts/training_submissions.js:
>
> > @@ -129,6 +129,18 @@ $(document).ready(function(){
> >                  $("#pathrun").attr("disabled",false);
> >              }, 'json')
> >      }
> > +
> > +    $('.revert-button').click(function () {
> > +        var index = event.target.id;
>
> remove this one as well.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/Coursemology/coursemology.org/pull/203/files#r17361984>
> .
>