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

Fixes #5778
Added unit test for getId() and constructUrl()

SMB ignore connection errors when NetBIOS is disabled

External storage space is now not counted in total space

Root size for home storage is now size of "files" subdir

Fixes #4593

Added argument to getFileInfo() to disable adding the size of
mountpoints to a directory's size.

Fixes #5924

change bold 'deleted files' button to normal for less focus

forward port of https://github.com/owncloud/core/commit/847ad6c40b951cbd3d187e3c72cb55dc3acd6951

fix input type time fields, have them use the default styles

Fix apps versioncheck

[encryption] fix redirectToErrorPage() call

Check which permissions are possible to re-share a file

When NetBIOS is blocked or disabled, a smb::look() call can still get
the list of shares from smbclient, even though the name resolution at
the end of the command fails.

This fix makes it ignore the connection error if we already got the list
of shares.

Fixed #5860