--changed the design totally and use only signals
between plasmoid in order to update their models. This
way the launcherList from their tasksmodel should be
updated only on the initialization phase of the Latte
plasmoid. Afterwards signaling between them takes
place, in order to inform each other for adding,
removing launchers, moving them and assigning them
to activities
--add functionality for layoutManager
--add widgets action and alternative layout action to
layoutManager
--remove more functionality that belongs to globalSettings
--when changing layouts/old sessions from the Latte Tasks
Context menu, Latte was crashing very often. Add the switching
code into a Timer to make its execution asynchronoushly
--all the functionality concerning the internal separator
is moved completely into the plasmoid. Now the add/remove
of the internal separator can be found through the Tasks
contextmenu as long as we are in editMode (that is showing
the configuration window)