[datatables] render text formatting

[D-Groenewegen]

Setup

• MW version: 1.39
• SMW version: 4.1.3
• SRF version: 4.2.0

First of all, many thanks for putting in all the hard work in not only re-implementing this format but providing a new version that can do so much more. So much, in fact, that I have yet to explore its full potential. Thumbs up!

Issue

If the new Datatables format is going to supersede SMW's implementation of it through the datatable class, I think there is at least one issue that need to be addressed first. Currently, the new Datatables format exposes all HTML tags for italics, subscripts/superscripts and the like, while the SMW version handles them correctly. The SMW version isn't perfect either because it does not support wikitext conversion to HTML.

That means there are two steps to fixing this:

1. Support wikitext conversion to HTML
2. Run html_entity_decode on the results from the query printer where the returned value is one of a property of type Text (or String).
   • The page links are rendered fine, by the way, because the link tags don't have their characters replaced by html entities.