Update elFinderVolumeDriver.class.php

if !function_exists('proc_open'):
Notice undefined index 'create' elFinderVolumeDriver.class.php @ line 898
[ui:tree] for touch devices, show contextmenu with long-tap
[ui] optimize for touch devices, disable resizable etc.
[cmd:download] disable on mobile device
[cmd:open] optimize for mobile device, direct open with file.url
[connector:Dropbox] add check, `class_exists('PDO')`
[ui:cwd] support cwd contextmenu with long-tap for touch devices
[VolumeDriver] optimize process of `imagick`
[cmd|ui:upload] unify paste-box to drop-box and optimize UI of upload
fix enbug of @f4b7d0594c5b742d0100d69f7ad5008407a1befe
[cmd:upload] fix pastebox problem with IE8(,IE9 maybe)
[css:dialog:upload:dropbox] tiny correction
[css] typo
[edit,quicklook] support non UTF-8 contents with mbstring extention
[core] optimize of uploading by drop HTML or URL text
[core:xhr.upload] optimize of multiple uploading
[core:ui.upload] optimize multiple upload notify
[ui:xhr.upload] correction of notify progress
Create elfinder.da.js

Added a danish language pack.
[ui:class dialogelfinder] JavaScript syntax strictly