Update elfinder.nl.js

To latest changes from english translation.
Update elfinder.nl.js
Merge pull request #922 from barryvdh/patch-1

Update elfinder.nl.js
Merge pull request #922 from barryvdh/patch-1

Update elfinder.nl.js
Merge branch '2.x' into 2.1
Merge branch '2.1' into 2.1_n