Access application definition

As a Nuxeo Studio user, I can access a dedicated screen to handle my Nuxeo dependencies.

I can access to an url with my studio project id.
Example: for the project rdaniellou-SANDBOX, if I open
https://connect.nuxeo.com/nuxeo/site/studio/ui/app/rdaniellou-SANDBOX
I get a screen with a title "Application Definition for rdaniellou-SANDBOX"

Technical choices for implementation:

• CRUD REST API.
• it will be based on chained adapter as already existing (URL: "..../workspace/ws.on/branch/master/ws.app")
• Storage in existing application.xml (See ApplicationDefinition.java), for now, as discussion is ongoing about best storage choice.
• UI will be Polymer based.