cubicweb #344724 Create instances through the web [open]

Have a "dashboard" on which we can create cubicweb instances through the web.

The idea is to have an application on which we can easily click through to the creation of a cubicweb application. The user would be presented with the high-level cubicweb applications (intra, forge, blog, fresh, etc) and would have forms to fill in to create them. The application would then remember the URL of the application and offer to control it (start, stop, delete, reset). The front page would be a list of the existing applications and links towards the creation forms of new applications.

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