[User management] Storage paths of users in windows server are shown using slash and backslash

[SergioBertolinSG]

Steps to reproduce

Using an administrator account:

1. Go to the users view.
2. Activate show storage path

Expected behaviour

Paths in windows are shown using backslash '' only.

Actual behaviour

Path in windows server are shown using a mixture of backslash '' and slash '/'.

Server configuration

Operating system:
Ubuntu 14.04 LTS

Web server:
Apache

Database:
MySQL

PHP version:
5.5.9

ownCloud version: (see ownCloud admin page)
{"installed":true,"maintenance":false,"version":"8.0.0.1","versionstring":"8.0 beta 1","edition":"Enterprise"}

Updated from an older ownCloud or fresh install:
fresh

List of activated apps:
none

The content of config/config.php:

Insert your config.php content here
(Without the database password and passwordsalt)

Are you using external storage, if yes which one: local/smb/sftp/...
no

Are you using encryption: no

Client configuration

Browser:
Chrome