Manage profile

Every user can create a profile with informations about himself and his visions / future plans.

New/edit profile:
![image](https://cloud.githubusercontent.com/assets/1814983/3356015/e1a92e06-faba-11e3-99a3-5a111e1359a0.png)

Show profile:
![image](https://cloud.githubusercontent.com/assets/1814983/3356045/658c7c14-fabb-11e3-993c-68b409de548e.png)
Final newline missing.