feat(events): show "No Events" on empty days

[marksie1988]

Description

This change adds a new option showNoEventDays this allows a user to show text when there are no events on any days, this also changes the noEventsForTodayText option to noEventText to allow for more generic text when using this option.

PLEASE NOTE THIS IS A BREAKING CHANGE DUE TO THE OPTIONS CHANGING

Related issues

• closes Show next X number of days vs. Showing the next X number of days with events. #221

Motivation and Context

This feature has been requested and asked for a few times, If someone wants to show empty days so that they dont go to appointments assuming they are today, this will aim to stop that from happening.

How has this been tested

This has been tested in my lab and appears to be working as expected.

Types of changes

• Docs change / refactoring.
• Non-breaking change (fix or feature that wouldn't cause existing functionality to change/break).
• Breaking change (fix or feature that would cause existing functionality to change/break).

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes don't generate new warnings.
• I have read the CONTRIBUTING document.
• I have added tests that prove my fix is effective or that my feature works.
• All new and existing tests pass.