Enhancement of the filter for not a having a feature.

[dglaude]

Right now you can filter for board with feature X, but you cannot filter for board that do not have feature X.
I used the "display" filter to identify board that might pretend to have a display, but not really.
I would like to use the "no display" filter to identify (visually) board with a display but that forgot to advertise it.

There could be other use for such negative filtering, and I have no clue how to make a user interface that make that easy.
Right now my use case is of limited interest and might make things too complex for few benefits.

[makermelissa]

Hmm, this could be interesting. We'd have to think about how the UI would function.