Update DAVdroid to 1.3-ose (114)
Changelist: https://gitlab.com/bitfireAT/davdroid/tags/v1.3 Code changes: https://gitlab.com/bitfireAT/davdroid/compare/v1.2.3...v1.3
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Changelist: https://gitlab.com/bitfireAT/davdroid/tags/v1.3 Code changes: https://gitlab.com/bitfireAT/davdroid/compare/v1.2.3...v1.3