add view only mode

Dudes, 
I've added view-only mode.
This mode is especially good for implementing dashboards.

![screen shot 2014-12-14 at 10 10 10 pm](https://cloud.githubusercontent.com/assets/5210115/5427421/41281fba-83df-11e4-8bc4-b3353f45900f.png)
screenshot for default mode

![screen shot 2014-12-14 at 10 11 56 pm](https://cloud.githubusercontent.com/assets/5210115/5427424/4652ee34-83df-11e4-96a9-95e0269939c0.png)
screenshot for new view-only mode

- hides editor
- hides table controller buttons 
- title is not editable 
- considering hiding paragraph setting button and control buttons (hide editor, hide result buttons)