Revert "Deprecated \OCP\IAppConfig - add missing methods to IConfig"

This reverts commit 012016d3.

Do not return shares for files outside "files"

Deprecated \OCP\IAppConfig - add missing methods to IConfig

add priority to storage wrappers

use StreamResponse to download the log file

core improvements for Encryption 2.0

also call generateTarget for group shares

Adding a pending indicator to the files summary

Show label for password change in IE8

Copy Etag header to OC-Etag for sabre calls

adjust controls bar width to not overlay scrollbar

update call

Don't append user in a filtered list if groups don't match

Merge pull request #15225 from owncloud/make-setups-for-users-that-tend-to-use-owncloud-on-not-proper-machines-a-little-bit-more-secure

Add some generic default headers as well via PHP

Filter potential dangerous characters in path name

fine-tuning the empty content messages

* fixes #10729

Fix namespace for repair step tests

More elaborate command description for upgrade

We should not allow / or \ in the postfix here.

Keep the extension in temp files

always fall back to default share folder

Mount options GUI for external storage

also call generateTarget for group share to add the correct prefix if share_folder is defined in config.php