Validate currency and percentage cardtypes
Ticket
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Currencies round - that is, if you put 12.345 in, you get $12.35 back. Not sure what the right thing to do is here.
Also, not sure if entering 17 should return 17% or 1700% (current behavior).
+solution
Do we really want these cardtypes? they're weird...
+example
view (card) not supported for foocurrency
view (card) not supported for foopercentage