Step 6: Modifying ContextFactoryImpl

Modify ContextFactoryImpl so that it has an implementation for the new interface method and so that it injects the new context API.
The following text is an example of code that can be added to ContextFactoryImpl.
// Contexts
...
@Inject var _calendarContext_Ext : CalendarContext_Ext
...
override function getCalendarContext_Ext(): CalendarContext_Ext { return _calendarContext_Ext }
