Add option to disable calendar popover

[bkuzma]

Table of Contents

• Description
• Motivation and Context
• How Has This Been Tested?
• Types of changes
• Checklist:

Description

I added a prop called calendarDisabled which prevents a calendar popover from being rendered when the input is focused. I added a corresponding test as well as an example to the example page.

Motivation and Context

This would be useful in cases where the user is entering a date far in the past, such as a birthday, and it's more straightforward to type the date than to click back month by month for possibly dozens of years.

How Has This Been Tested?

I wrote a test which verifies that the popover isn't rendered when the calendarDisabled prop is true. I tested the component in Chrome 61.0.3163.100 on the examples page.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.