html: add parameter to enable/disable table title label

[lionelmoi]

Add a switch to turn off the addition of <span class="table--title-label"> before the title during table generation.

[jelovirt]

My preference is not to add parameters for features like this, because it will lead to having 500+ parameters.

A workaround I use for this is

.table--title-label { display: none }

To hide the label.

[lionelmoi]

OK good enough for me.