Extend treatment form

# WIP - NOT DONE

### Tasks:

  - [ ] support for delayed entry
  - [ ] support for pre-bolus
  - [ ] support temp basals (+/- % for a duration in minutes)
  - [ ] support for combo boluses % now, duration of the rest
  - [ ] split note and question treatment types (will be used to notification level)

### All treatment types:
![screen shot 2014-11-04 at 11 31 53 pm](https://cloud.githubusercontent.com/assets/751143/4914123/dcbb89b2-64bd-11e4-94af-9dcffc15c5c5.png)

### Carbs (pre-bolus):
![screen shot 2014-11-04 at 11 25 55 pm](https://cloud.githubusercontent.com/assets/751143/4914119/bd566628-64bd-11e4-82a4-3908a58845e1.png)

### Carbs (when past/present/future):
![screen shot 2014-11-04 at 11 26 14 pm](https://cloud.githubusercontent.com/assets/751143/4914122/c2341b04-64bd-11e4-8119-f8c892b51b0d.png)