Orange update and security patch in correction mode

- change the way to add documents to a drop ( now inline )
- dropzone correction is now on top
- reorganisation of labels in open drop view
- New instruction field for examiners
- New richText messages available to success or fail cases.
- New progressBar added in dropView/correctionView/openView ( last action done )
- Reskin for dropView
![eval_progress](https://cloud.githubusercontent.com/assets/3479942/2550916/602a79e6-b688-11e3-9b2f-5a54553413c0.png)

![eval_test 2014-03-28 15-52-45](https://cloud.githubusercontent.com/assets/3479942/2550945/b24e4388-b688-11e3-9c0d-746a98ff3547.png)