[js utils] backport some generic code from comments cube to handle inline ajax form as you get to add comment to entities. Following stuff has been generalized and backported to ease such things: * lazy_view_holder() method on EntityCtxComponent class, to build place holder where the form will be inserted * ajax_composite_form() function in cw.web.views.ajaxedit, to build the form itself * reload() and reloadCtxComponentsSection() javascript function in cubicweb.ajax.js for the javascript processing side

action box
    Area visible in the upper left column. You have a list of available actions on the entity. The most frequently used entry is `modify`.

object
    All element created in the application
    Example: project, ticket, user, ...

relation editing module
    HTML widget that let you define new relations amongst objects.

relation
    It's a kind of 'smart' link between 2 objets of the application. It has a specific sense that determine dynamic behaviour and add a new logic of the content.