New boolean param for user to choose to hide empty stats

[RyanTG]

Description

Adds logic to the stats file to hide stats, based on user preference, when two conditions are met: user prefers to hide them, and they are empty.

This logic had to be more complex (or busy-looking) than I originally envisioned. But this is the best I could come up with. The logic is way simpler when you simply enable this functionality, without giving the user a choice.

Motivation and Context

Currently, If a Tag or Category isn't populated, the icon is displayed and it says "None". This seems like noise to me. This PR gives the user the choice to hide the icon and text if none.

Checklist:

• I have updated the documentation, as applicable.
• I have updated the theme.toml, as applicable.

I updated the exampleSite config, and I included a comment describing it. If that is not preferable, I can remove the comment and add the text to the wiki.

[RyanTG]

Ah, yes. Thanks, that logic is much more... logical. I should have seen that, considering how long I spent looking at it.

Your markup was missing the initial if, and we still need the whole range jive. Now it works!

Wiki entry:

hideEmptyStats
Hides the "Category" and/or "Tag" icon on a post, if neither is defined for that post.

[RyanTG]

It did not work. But I can try to investigate why it didn’t.

[pacollins]

Once I get final approval from @RyanTG, I will go ahead and merge this.

[RyanTG]

Once I get final approval from @RyanTG, I will go ahead and merge this.

I approve. Is that a more formal way for me to approve? If so, I'm not seeing it.

[pacollins]

Nah, I just am looking for a final comment to make sure that you have everything there. I have been known to move too quick, so I like that you guys are helping with development so I can force myself to slow down!

I mean you could theoretically do a review in the files changed tab.