Fixed path normalization to prevent dot dirs

Make working en_US.UTF-8 locale a hard requirement

Fixes #5945 where stat(.) would cause the backend OC to cache a dot dir
(only in older versions)

Quota storage wrapper is now used for all users in sharing mode

Added min width to files table

Fixing l10n again master

Having a too small widths for the files table doesn't make sense as it
overlaps file actions with the files themselves and make them
unclickable, especially when viewed on mobile phone.

The compromise that this fix introduces is to have a minimum width that
will trigger horizontal scrolling, which will at least make it possible
to click files on mobile phones.

LDAP Wizard: add objectclass for group detection in Zimbra

Public view fixes

To find out whether to apply a quota, we now try and detect whether the
storage to wrap is a "Home" storage.

When accessing a shared folder, the folder's owner appears as mountpoint
but wasn't wrapped by a quota storage wrapper.

This fix makes sure that all home storages are wrapped by a quota
storage wrapper, if applicable, to make sure quotas are respected when
uploading into shared folders.

Fixed error-checking error in sftp.php

Fixed move operation to pass the whole URL as expected

The MOVE and COPY spec expect the "Destination" header to receive the
full URL, not only the root.

Fixes #5942

Fix for extstorage + encryption where unencrypted size is not kept

Change default mimetype detection for storage backends to only use filename

always get the right node for the given file path

only check if the key file exists to decide if it is an encrypted file or not

Fix for external storage with encryption where the unencrypted size is
first written in the DB, then set back to zero, causing performance
issue because the file needs to be reopened every time to find out the
unencrypted size (and potentially needs a full redownload)

Fixed getLocalFile() condition for x-send-file

Until now, addSendfileHeader() was called even when no x-send-file
headers were set. Even though the method itself doesn't do anything,
a call to getLocalFile() was done and would trigger a full download
when using external storage.

Additionally, the storage resolution code is wrong and always
returns the local storage of the root filesystem, which caused the code to
be run anyway.

This commit fixes both issues.

This solves problems with external storage which doesn't support fseek

remove bold from legend, table header, label - less obtrusive

fix encryption with LDAP, make sure that the owners home is mounted correctly

[SMB] Fix stat and unlink

Since unlink() smb4php doesn't return true on deletion success, we need
to check whether the file was deleted to confirm success.

Fixes #5866