fix: add selectOtherMonths to p-calendar

[jdegand]

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PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

You cannot select events in the next month of the calendar.

Issue Number: #337

What is the new behavior?

I added selectOtherMonths to p-calendar and now events that are early in the next months are clickable.

Closes #337.

Does this PR introduce a breaking change?

• Yes
• No

Other information

I didn't look into testing or anything extra.

[jdegand]

I had CORS issues when I served the app and it crashed but not before I was able to hover over the event and see the cursor change.

[geromegrignon]

Thanks, I'll keep the PR open by now: I wonder if there is some way to identify the "not-current" month dates to customize their styling. "othermonths" dates are not gray anymore, both fine as selectable but confusing to identify the start/end of the current month.

[jdegand]

disabledDays or disabledDates may work in combination with selectOtherMonths.

Since the dates without an event are not saved anywhere, you need to create all days without an event to pass to disabledDates.

It may be easier to use disabledDays to filter an array with 1-31. But disabling all days will break existing functionality and prevent clicking on the day and having there is no event scheduled message appear.