Doc updates required for the release of Web UI 1.0

When Web UI 1.0 is release, we'll need to update several docs pages to reflect that and privilege Web UI against JSF UI.

Still to be discussed / determined: Do we provide resources for both Web UI and JSF UI for some time? How do we implement those two tracks?

Here is the list of pages that are sent by the Marketing team:

• Start customizing the Nuxeo Platform (NXDOC-1102)
• From JSF UI to Nuxeo Studio (NXDOC-1107)
• First Steps With Studio: Technical Documentation Tutorial -> When new version of "Start customizing the Nuxeo Platform" (NXDOC-1100) is published, tell marketing that they should use this new one and not 1st step anymore.
• Simple Workflow Example (NXDOC-1009)
• How to Publish a News Feature in Workspaces -> It will be deleted. We need to tell the marketing team, since they use it in email campaigns.