Merge pull request #5 from poifox/master

Update
Update Arabic 12-8-2013

- Translate new words
Polish Language v2.4 | Update new strings.
Merge pull request #61 from ttomek32/master

Polish Language v2.4 | Update new strings.
Merge pull request #57 from Khalidsrri/master

Update Arabic Language
Deprecated French because the branch was orphaned.
Updated README.md
Added a few more strings, and translated them to Spanish.
Update default.po
Update model_validation.po
Merge pull request #62 from Pyrophorus/master

French translation update
Merge pull request #2 from poifox/master

Merge Pull Request