Fix main tab switching during navigation

When navigating in the new interface with main tabs (document management, admin center, user center...), sometimes the main tab needs to be switched, for instance:

• in user center, perform a simple search => document mgmt tab should be selected instead of user center tab. same when clicking on "advanced search" or "personal workspace"
• in document view, when user links are displayed, need to select the user center tab

Ideally, switch to the document management tab should be done by default, and switches to specific tabs (user center, admin center) should be done explicitely when needed.

=> need some work on url service to handle it on get urls as well as posts, taking the JSF view id as a criterion.