Fixed All day events start time may be incorrect (iOS only) #337

[OleksandraFedotova]

Fixed fullDay with DateRange events creation (not only one fullday events possible to create) Timezone should be set only if event is not full day

[IVLIVS-III]

Could you please describe what exactly this PR fixes.
What went wrong / didn't work as expected?

It looks like this PR also introduces all-day-multi-day events. Is that correct?

[IVLIVS-III]

I just tested your changes on iOS.
Works great, all-day-multi-day events can be read from the calendar without issues.

Could you please also change the example app, so while adding a new event, when toggling all-day to on, the input field of event end no longer disappears.
With your PR hiding this field is no longer necessary on iOS.
It would be good, if we could also test creating multi-day all-day events from within the example app.

[OleksandraFedotova]

My PR fixed the problem with creating all-day-multi-day events in IOS. Yep I can fix test app as well)

[IVLIVS-III]

Great, that's what I thought. Is a very welcome change.

Perfect if you can change the example app as well, thank you.

[IVLIVS-III]

Since I don't want this PR to be blocked any longer, waiting only for changes in the example app, I split it up into a separate PR (see #454).

Thanks @OleksandraFedotova for your contribution.

[IVLIVS-III]

LGTM

[OleksandraFedotova]

@IVLIVS-III Sorry for not providing changes to the example app, will do my best next time while contributing ;)