Add french translations

[flohw]

Sorry for delay, was on holidays :)
I think translations are OK but I was not able to run bundle exec jekyll s after pulling changes on your repository. Got this message :

 ERROR: YOUR SITE COULD NOT BE BUILT:
                    ------------------------------------
                    Invalid date '<%= Time.now.strftime('%Y-%m-%d %H:%M:%S %z') %>': Document 'vendor/ruby/2.3.0/gems/jekyll-3.1.6/lib/site_template/_posts/0000-00-00-welcome-to-jekyll.markdown.erb' does not have a valid date in the YAML front matter.

I havn't enough time to search now. I have run bundler install

[mmistakes]

Thanks.

I don't think that error is theme related. Jekyll has a problem with vendor/ruby/2.3.0/gems/jekyll-3.1.6/lib/site_template/_posts/0000-00-00-welcome-to-jekyll.markdown.erb which is in your system, not the theme.

Probably have to throw vendor into exclude in _config.yml to ignore that file.

exclude:
  - "*.sublime-project"
  - "*.sublime-workspace"
  - .asset-cache
  - .bundle
  - .jekyll-assets-cache
  - .sass-cache
  - assets/js/plugins
  - assets/js/_main.js
  - assets/js/vendor
  - Capfile
  - CHANGELOG
  - config
  - Gemfile
  - Gruntfile.js
  - gulpfile.js
  - LICENSE
  - log
  - node_modules
  - package.json
  - Rakefile
  - README
  - tmp
+ - vendor

[flohw]

Fixed, I used the default configuration. Then some documentation to read with staticman and update ui-text.
You can merge that 😄

[mmistakes]

Merged. Thanks!