add emoji support

Adding support for emojis.
![image](https://f.cloud.github.com/assets/1506905/1940235/ac4d2acc-7f73-11e3-8a55-8ba41346c1c8.png)
Honestly ripped from https://github.com/arvida/emoji-cheat-sheet.com
Also renamed files with hashes to dictionaries, we might have others in the future, maybe, even move them to separate folder.
Also a question whether smiles should be bigger on smaller screens, to be readable.