- Reuse these methods on determineIcon()
- Generate permission string for the desktop client
- expose {http://owncloud.org/ns}permissions as additional WebDAV property containing the permission string

after being uploaded in .part files

Fix #8131

The write-hook also is triggered for created files

Fix #8131

using scrutinizer patch

When using user-defined stream wrappers, PHP will
return a maximum of 8192 bytes even if more was
requested.

This fix uses stream_get_contents to make sure the full stream is read
and not only the first 8 KB.

Added unit test with a bigger test file to cover this case.

That method was moved to the external storage recently so
isn't needed here any more.

When using an external cache folder, it is automatically mounted in
FileSystem::initFileSystem so that any app can use it transparently
by creating a view on the "/$user/cache" directory.

Fixed the quota storage wrapper to correctly return the quota value when
the free space is not known (which usually happens when the disk_free_space
function is disabled)

Moved the mounting code for external storage from
OC\Filesystem::initMountPoint to files_external using the
post_initMountPoints hook

The total space display in the personal page now shows the quota value
instead of used space when used space exceeds the quota (soft quota).

This fixes the "used space" to be based on the unencrypted size, not
encrypted size, to be consistent with how quota/space is handled when
encryption is enabled