CONVERT block: display the actual input and output types on the icon. Same for TrigFunc (name of the selected function), and for FROMWS (name of the source variable)
Reported by Samuel GOUGEON (@sgougeon)
BUG DESCRIPTION:
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CONVERT block: display the actual input and output types on the icon
Presently, we must call the parameters interface to know which are the
types processed by the block.
The types should be displayed (in clear, no code) on the block's icon.
Example : "decim -> int16"
(Note: "decim" should be used instead of "double")