[#39] Updating web client for teacher

Relative issue: #39 
Use prepared questions step is coming: IQSets listed
When saving a new iqset, the server always overrided the session values to insert 'Teacher' and 'General'. I also fixed that.
As we can see, the iqsets **second**, **third**, **test**, **five** represent what happened before.
**Six** shows what it is now.
![screenshot_2014-04-19-02-38-26](https://cloud.githubusercontent.com/assets/3521208/2748900/da3a6724-c7df-11e3-8238-7eec940411c5.png)
.