Modify the "Dimension" form so that sub-classes can be used

[valamercery]

Problem description / use case

Currently, when you want to add a crm:E54 Dimension to the Toolbox, a form opens and asks you to add a numerical value and a unit.

If you want to add using a subclass of crm:E54 Dimension, such as crm-sup:C21 Monetary Amount, the form is not displayed.
Similarly, if you want to use a unit (even with crm:E54 Dimension) that is an instance of a subclass of crm:E58 Measurement Unit - such as crm-sup:C22 Currency - the unit does not appear in the list.

Functional Requirements

• Would it be possible to modify the parameters of the application so that it takes into account the sub-classes of crm:E54 Dimension and crm:E58 Measurement Unit? Or at least the crm-sup:C21 Monetary Amount and crm-sup:C22 Currency classes? For tests, see this profile, which contains the necessary classes and properties: https://ontome.net/profile/260

• Finally, in the form, the unit is mandatory, which can pose a problem for countable quantities. Adding a ‘Quantity’ unit by default in the projects could remedy this.