Fix/filter cancelled events

[sharukh010]

1. Fix: Filter cancelled events from calendar list

gog calendar list was returning cancelled events because ShowDeleted
was not explicitly set in the API call.

Added .ShowDeleted(false) to calendarEventsListCall, ensuring the
Google Calendar API filters out cancelled events before returning results.

2. Fix: Bool/string type mismatch in contacts (contacts_crud.go)

Variables given and org were incorrectly declared as bool but are
used as strings throughout the function (e.g. passed to strings.TrimSpace
and contact name/org setters).

Changed declarations from bool to string to match their actual usage.

Fixes #358

[econosopher]

Love it.

[salmonumbrella]

Thanks.