Create Spaces

[exalate-issue-sync]

Userstory

• create a ground work story for user roles in web

As a user with the appropriate permission I want to create a space to collaborate on a certain topic with other people.

Acceptance Criteria

• permission If a user has the permissions to create spaces, he sees a "+ New Space" button in the spaces overview (same behavior like creating a folder)
• Space name can be set in a form (cf. dialog if you create a folder)
• quota: Space gets created with a predefined quota (backend config)
• people Space has initially no people except the user who created the space
• image Space has no image, can be uploaded on click, stored inside a folder ".space"
• Description Space has no description, can be added on click (adds readme.md c.f. github), stored inside a folder ".space/readme.md"
• nomenclature Allcaps