**Description of the issue this PR addresses:**

Some views have inconsistencies:

-  First commit fixes some views by adding `create=False`. They should have it because the other related views (normally tree view) of the model already have it.

- Second commit is explained by its name.

- Third commit is a special case in the pos.config views. The kanban view has the `create=False` but the tree view doesn't. But happens that exists two actions that open these views. One action (dashboard) has access the user and the manager so it makes sense to just has kanban view for that action. The other action only has access the manager, so it makes sense to has access to tree and form who could edit and create new pos configs.

- Fourth commit it's not a fix but something that interested me. It just happens that there exists two actions for the same model. One action is for reports, so in theory the people accessing to this action should only see the "reports" views (calendar & pivot) and not the tree view which has link to form. So I deleted the tree fro that action although other option would be letting the tree but deleting the form from that action.

**Current behavior before PR:**

You can access to form view in some models when this is not intended.

**Desired behavior after PR is merged:**

Solved explained inconsistencies.


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