The encrypted size was used when calculating folder sizes.
This fix now also sums up the unencrypted size and shows that one when
available.

This fixes the issue introduced by the transfer id which itself wasn't
taken into account by the shortcut code for part file in the shared
storage class.

Storage mount points are not deletable, so make sure that the unlink
operation and its hooks aren't run in such cases.

Note that some storages might recursively delete their contents when
calling unlink on their root. This fix prevents that as well.

Fixes #6526

in order to work properly with encryption ocTransferId is added to the file path - questionable usage of magic string

see http://www.php.net/manual/en/apciterator.construct.php

The core 3rdparty directory is in the include_path from lib/base.php anyway, so this is unnecessary, and causes problems for downstream distributors who unbundle Pimple.

Add support mimetype for extension .sh, .bash and .sh-lib

This reverts commit 2d75914f, reversing
changes made to 760fa9ea.

new config parameter 'front_controller_active' which will instruct the url generator to generate urls without index.php