Traduction - Anglais-Nepalais - Nepali, Romanian, Italian, Bulgarian, Arabic and Portuguese

Six new languages for the user interface of cucumis.org!
Thanks to:
- jaH who has translated offline the nepali files.
- aelred and lorelai for the romanian version.
- carla1604, Witchy and Lele for the italian version.
- hollowman and vyras for the bulgarian version.
- marhaban for the arabic version.
- Papai Noel and arkangath for the portuguese version.

I apologize in advance for any people I have forgotten to include.

Coming next:
- I'm still developing the "Project" section but I lack free time these days.
- I'm also thinking about developing a tiny wiki engine for the help section and maybe for a "Learn" section coming in a few months...