LP#1205072 - Action Trigger Granularity Case Sensitivity

LP#1205072 - Action Trigger Granularity Case Sensitivity

This change makes the granularity settings case insensitive.

To test this issue
1. Create/Modify an action trigger to have an all uppercase granularity settings.
2. Run action_trigger_runner.pl with the same granularity set to lowercase
3. Observe that the events are not processed.

After the change is applied the granularity case doesn't matter for either the event_definition
or the flag to action_trigger_runner.pl.

I didn't modify the code path for when the granularity only flag isn't set since it
never gets used, and I don't want to change what I cannot test.  Maybe the best course
of action would just be to remove that section?

Added "weekdays" option to match up with example crontab file.

Replace the release notes entry since the behavior has changed.

Signed-off-by: Josh Stompro <stomproj@larl.org>