Minutes are not displayed unless it's the top of the hour

Problem/Motivation

When formatting the time for output, the minutes are only shown if it's the top of the hour, when it should be the opposite. E.g., if it's 9:32 am, "9 a.m." is output. If it's 9:00 am, "9:00 am" is output.

This is due to the logic here which is reversed:

          if ($date->format('i')) {
            // Don't display the minutes if it's the top of the hour.
            $ap_time_string = $date->format('g a');
          }
          else {
            $ap_time_string = $date->format('g:i a');
          }

Steps to reproduce

1. Setup a content type with a date field and configure it to use the AP Style Date formatter
2. Add a node and set that date field to a time that is NOT the top of the hour
3. View the node and observe that the minutes are not shown, when they should be

Proposed resolution

Fix the logic.

Remaining tasks

User interface changes

API changes

Data model changes