User from webspace A can not get permission for webspace B

[alexander-schranz]

Q	A
Bug?	no
New Feature?	yes
Community Bundle Version	1.0.0-RC3
Sulu Version	1.6.13
Browser Version	Browser name and version

Actual Behavior

When having 2 Webspaces a user from Webspace A can not get Permissions to access Webspace B.

Expected Behavior

User from Webspace A should be able to get permissions (the user role) for Webspace B.

Possible Solutions

A functionality could be added which will allow User form Webspace A register with the Login Data from Webspace A for Webspace B. It will work like "Login with Github" where he first need to enter its username and password of Webspace A which will send its request to a new Controller which will add the user the Role for Webspace B. After that he will be redirect to Webspace B where he is successfully logged in.