add a object UA into JS class elFinder

`jQuery.browser` removed from "jQuery 1.9". This change is replace
jQuery.browser to new elFinder object `UA`.
add elFinder.UA.Safari & elFinder.UA.Chrome
refreshed zh-cn translation
updated version and line feed format

now uses unix line feed convention
Merge pull request #491 from deerchao/2.x

refreshed zh-cn translation
Merge pull request #470 from nao-pon/no_.browser

add a object UA into JS class elFinder
Merge branch '2.x' into 2.1