Fix local definition of `newVars` in function `wMultiCheckSelect`

The local defintion is not appropriate since `newVars` is a constant (with a recursive call) and, therefore, every variable is evaluated to the same value, which is not the intended behaviour.
Adapt Spicey example to use WUILenses

Exchange all uses of WUI to WUILenses and add some special edit views to test the usage of `transformWSpec` in order to hide entity information.
Remove redundant import
Update README and notes