This is a convenience module in order to have less import noise. It
re-exports the following:
a) Commonly used modules in full (Data.Foldable, Data.Applicative, and
so on); though only those that play nicely with each other, so that
XMonad.Prelude can be imported unqualified without any problems.
This prevents things like `Prelude.(.)` and `Control.Category.(.)`
fighting with each other.
b) Helper functions that don't necessarily fit in any other module;
e.g., the often used abbreviation `fi = fromIntegral`.
I recently found that I use xpad to add sticky notes to my desktop. I wanted
to be able to show/hide these in the same fashion as regular scratchpads. This
patch adds a function that allows to do this while reusing most of the existing
NamedScratchpad code.
