[0.13] API signal type inconsistency

[GotLag]

SignalID uses the string "virtual" to represent virtual signals' type
SpritePath uses the string "virtual-signal"

This is mildly irritating when you're using combinator parameters to draw lists of signals on a GUI.

[Klonan]

Thanks for the report,

This does seem frustrating, and i know a dev who hates inconsistencies

[kovarex]

I don't consider this a bug. In the context of signals, virtual is enough. In the context of everything, virtual-signal needs to be specified.