* code cleanup and fixes for unsupported objects and fetch requests
* improves sanitizer function
* adds comment to the utility function sanitizeCalendarObjects
* adds ICAL.parse in try catch-- fixes code breaking for all objects due to one bad ICAL body
* adds a function that ensures expand=false fallback for unsupporting calendars
* --WIP
* improves code to now support multi-event calendar ics parsing
* Handle failed calls to not break all selected calendars
* removes debug remnants
* removes further unnecessary comments
