Simplify if only in view

[johan-smits]

Currently if you want to show something if it is set and nothing if not you have to write this:

(if *something.get() {
  view! { cx, "Enabled" }
} else {
  view! { cx, }
})
``

You want to write just this without the else case:

```rs
(if *something.get() {
  view! { cx, "Enabled" }
})
``