[#61] iOS: Refactor date components used in repeat notification scheduling.

[jeffscaturro-aka]

Issue #61

Description

• Notifications scheduled for a time earlier in the day than the time the code was called resulted in invalid triggers (never getting fired).
• For instance, it's noon and you are scheduling a morning notification to be shown daily. These wouldn't fire because our trigger is initialized with today's date resulting in the impossibility to be executed.

What Was Changed

• Drop NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay from the NSDateComponents we use for our UNCalendarNotificationTrigger. The trigger should ignore the year, month, and day and instead only be fired when it's the appropriate time and/or weekday.
• Specify the calendar on the NSDateComponents since we no longer init with components from a date and calendar.

Testing

• Regression tested scheduling daily notifications.
• Regression tested scheduling weekly at day and time notifications.
• Schedule a daily notification to be shown for a time earlier in the day; that is, schedule a notification to be shown daily at 8:00am if it's later than that already in the day when you schedule it with the plugin.

Little trick to test:

• Schedule a daily and weekly notification for an hour ago (and today's weekday).
• Go into your iPhone's Settings -> General -> Date & Time.
• Turn off Set Automatically.
• Move the time before each notification. As you drag the minute past it (and release) you should get your notification!

[MaikuB]

Awesome, thanks! I'll publish this tomorrow