Slovak translation
"$().ready(handler)" in example not recommended

As "$().ready(handler)" is not recommended(http://api.jquery.com/ready/)
Update french translation,
Add new descriptions
Update elfinder.fr.js
Update elfinder.fr.js
Merge pull request #659 from jlamer/2.x

Slovak translation & `$().ready` to `$(document).ready`
Merge pull request #666 from benorde33/2.x

Update french translation,
Merge branch '2.x' into 2.1