Enable NULL label in orderInput()

[tomicapretto]

When you specify a NULL label in, for example, selectInput(), the result is an input object without header.
The current implementation of orderInput() lets the user to specify a NULL label but it does not result in the label being removed and consequently you get a blank space in the UI.

Currently, orderInput() handles the label argument as follows:

...
  label <- shiny::tags$label(label, `for` = inputId)
...

I think that you can switch it to

...
  if (!is.null(label)) label <- shiny::tags$label(label, `for` = inputId)
...

In order to behave similarly to other input functions in shiny.

[Yang-Tang]

Thanks for the good suggestion! I have included this feature in the next release of the package.