when one is adding an inline entity for a relation of a single card,
the 'add a new xxx' link disappears. If the user then cancel the addition,
we have to make this link appears back. This is done by giving add new link
id to removeInlineForm.
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.