Use HTML5 syntax to style table

[Bisaloo]

I noticed this while checking my website with an HTML5 validator. I don't expect this change to have any downsides as the vertical-align and text-align CSS properties are supported by all browsers (source).

This also allows users to easily overwrite the default table style with CSS.

[Bisaloo]

~~(Looks like editing the changelog via the GitHub web interface changed the encoding. I'll fix this later today.)~~