Minor changes to the French and English languages pack

- Changed Entrée to Article (similar as in EE)
- Shortened some wording due to CSS glitches (no overflow + box not
extending)
- Deleted reference to the User module
- Corrected some singular / plural forms
- Corrected some punctuations (colons...)
- Other minor changes, including a mispelled word in the English file

Resaved the french language file as UTF8 with no BOM, LF endings (when
saved as UTF8 only, the file throws a PHP error)