Show drafts emojified when Android version is below KitKat

Fixes the issue that drafts with emojis (added from the TS emoji drawer) are shown 
- as rectangles on GB  
- as font letter emojis on JB and ICS

when opening a conversation that has a draft.

The only thing I'm not completely sure about is the `getBaseContext()`.

GB
![unbenannt3](https://cloud.githubusercontent.com/assets/5326916/3060200/233b46c6-e1f5-11e3-861e-28fa0d3c2529.png)
![unbenannt4](https://cloud.githubusercontent.com/assets/5326916/3060203/27076668-e1f5-11e3-9015-dce744b0e006.png)

ICS
![unbenannt2](https://cloud.githubusercontent.com/assets/5326916/3060205/2bd63d54-e1f5-11e3-9e97-5c84df874f8f.png)
![unbenannt1](https://cloud.githubusercontent.com/assets/5326916/3060209/2eb38c66-e1f5-11e3-9070-5ca780cb6ba7.png)