Feature/toolbar refactoring

refactoring of toolbar. It's nothing perfect ,but much cleaner and understandable approach to the toolbar. state is now managed over $scope.menu to handle the UI and from ToolbarService.getState() to get the configs.

future refactoring should be to introduce AppState that will contain all this, instead of the Toolbar being accessed to from all over the place. Who know's maybe some day we'll have something better than just one toolbar (a mind reader, for example!)