Updated French (France) translation

Based on latest default files
Merge pull request #80 from EddyLB/master

Updated French (France) translation
Allow overriding functions in a Child Theme
Customizer: Add Show Nav Menu on Single Post Pages option. See #82.
Allow primary nav menu to be shown on Single Post Pages. See #82
New Customizer option and other minor changes
* Customizer: Add new 'Show Updated Date on Single Posts' option
* Change 'Show Post Word Count' option default from true to false
* Add new independent_publisher_post_updated_date() template tag
* Allow "Published" and "Updated" strings to be translated
Update default language files
Update French (France) language files

Performed following 333cb78117966c27beb3e320e519eb88e63a9e03 commit.
Merge pull request #84 from EddyLB/master

Update French (France) language files
Releasing v1.4

* Fixes #82
* Fixes #75
* Fixes #72
* Fixes #35
Fix hidden progress bar when Admin Bar is loaded
Santize Customizer settings
Releasing v1.4.1
Add Single Posts Menu location. See #87.
Add Russian translation (thanks to Артем Рябков)

See https://twitter.com/rad964/statuses/455056542048727040
Add missing Featured Image support from Single posts
Update Russian Translation to fix comments. See #89.
Fix bug with oEmbeds not working on Quote and Aside Post Formats. See #91.
Add option to Auto-Set Featured Image as Post Cover

- Adds a new option to the Theme Customizer under General Options
- This option can be disabled on a per-post basis by checking "Disable post cover" in the Featured Image meta box
- See Issue #86
Update language files