added replace function which throws a replace event (in case the whole colelction is swapped with a selection) and overwrote the backbone _prepare model function to make the call of prepare of its model possible
added prepare function which will be called after the constructor and before the parse/initialize when it is instantiated by a collection or by it self
the selected attribute now has to be an colelction to bind a change listener and refresh the selection. GetDisabled- and getSelectedModels are now returning a colelction instead of an array
the referenced groups collection is now instantiated in the prepare function instead of initialize
added return statement to the constructor
The referneced collections are now instantiated in the prepare method instead of the iniitalize
The referneced collections are now instantiated in the prepare method instead of the iniitalize
The referneced collections are now instantiated in the prepare method instead of the iniitalize
added latest build