Reinhard Führicht authored Jan 16, 2016 and Georg Ringer committed Jan 16, 2016

Fixed exception shown when

1) uploading an existing file without "Overwrite" setting activated
2) opening export module as a non-admin
3) opening import module as a non-admin without permission
   to access an available file storage

Also improved error message for missing default file upload folder.

Resolves: #72765
Releases: master
Change-Id: Id1133d1a8adc6c28088ef85730fe01145b4fa3a2
Reviewed-on: https://review.typo3.org/45998


Reviewed-by: Martin Kutschker <martin.kutschker@ymail.com>
Tested-by: Martin Kutschker <martin.kutschker@ymail.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>