RFC: Put notifications in sidepanel like widget explorer

[Marco Martin]

On Monday 22 February 2016, Marco Martin wrote:
> then the popup resize/move could be managed with the new morphingpopups
> effect.
> 
> maybe it would still look a bit too much "dancing" but would still give
> enough breathing space for each applet, and wouldn't have the overwhelming
> "everything at once" feel

(and anyways, i am still on my policy of separing technology changes and ui 
changes, so when the default systray will be changed to the new implementation 
in 5.7 it will look as near ar possible to the current one, with any UI 
changes for 5.8)

-- 
Marco Martin