Add Edit Mode detection from Zren's Show Desktop (Win7)
Add Edit Mode detection from Zren's Show Desktop (Win7) and make the margin separators only occupy '1' if outside Edit Mode.
This means that the Plasmoid will no longer occupy the space it currently occupies in panels unless inside Edit Mode.
Code is by Zren and co., I just merely put it into the Margins Separator Plasmoid. (I got permission from Zren in the KDE Development chatroom to send this)
Note: Plasmoid spacing still makes it occupy some space in some themes, but it's less space than how it was before this change.