EditableCard
============
A card to display a value and allow it to be edited by clicking.

Properties
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:editable: Boolean

    Whether the card should allow its value to be edited

:icon: Icon

    To display in the top right corner of the card

:datatype: String

    "text", "number", "date", "time" or "yesno"
    Setting this property will affect which type of component is displayed to edit the value