[mkcal] Remve ExtendedCalendar::deleteAllIncidences(). JB#61885

[mkcal] Fix ExtendedCalendar::deleteAllIncidences. JB#61884

Merge pull request #66 from dcaliste/deleteAll

[mkcal] Fix deleteAllIncidences().

[mkcal] Move alarm handling to separate class. JB#60800

[mkcal] Don't emit storageModified on local notebook change. JB#60862

Merge pull request #63 from dcaliste/transition

Various minor changes to clean and allow multi-notebooks for incidence sharing the same UIDs

Merge pull request #62 from sailfishos/separate_private_headers

Separate private headers

[mkcal] Drop ExtendedStorage from ServiceHandler API. JB#60786

[mkcal] Order search results with recurring events first. JB#60772

[mkcal] Support purging events by notebook. Fixes JB#60740