Make form with editor keyboard friendly

When editing an entry in dashboard with editor, it should be keyboard friendly. For example, when editing a content block:

![Content block](http://i.imgur.com/MUJbw0S.png)

- when finished with *Name* field, press `tab`
- when finished with *HTML* field, press `tab`
- on *Save* button press `enter`

What actually happens: After *Name* field, `tab` key gets you to the first formatting button. You have to switch over all of those formatting buttons before you get in the *HTML* field.