As a oc user I want to be able to use forbidden characters on the folder and file names froc 0c8.1 server versions on so that the errors will be handled on the server side

[ggdiez]

AC:

• Allow forbidden characters on the server on file and folder names
• In case of error, the error message it would be: "The name contains at least one invalid character"
• It won't be allowed the "/" character the reason is because it will imply deep changes on the code

[rperezb]

Done, https://github.com/owncloud/ios/pull/392