Issue: Wiki needs more Style properties

It would be useful to be able to set FA icons for each function so that its the same as xenforo.
A setting to turn off the 'go to top' function would be useful because most custom styles (as well as XF2 and IPS come with an inbuild function for this.

Here is feedback from PixelExit:

The wiki styling needs to be address on a wiki level. Some suggestions:

- Headers inherit the built in properties for headings, subHeading // heading
- Font family has been set via vw-content property, no need for this but instead just inherit the default style font family
- Font sizes as I mentioned are all over the place, XF1 doesn't use em font sizing anywhere, original suggestion stands maybe use properties, I've reduced all the headings for now.

This request contains a number of elements which you already have other resolved requests about.

Your op opens requesting more style properties; then your posts proceed to list situations where style properties are being used already that you would rather not. Adding more style properties would increase this issue.

For your suggestions that are not covered by other requests, the remaining ones are:
Regarding font-sizes, as far as I know, XenForo 1 doesn't support using another style property as a font-size value in a style property. If I am wrong about this, then it might change some things, but in general we have to go by the default style, and there might be undesired styling if the font-size from the inherited property was not defined.

Regarding the headings, we have improved the consistency for a lot of these in 4.1.x. If there is an issue with a particular heading, please specify the heading.

Closing this as merged with other requests.

In general a site will apply the same font-family site-wide. By imposing a different font family than the default this causes extra work for style developers. I'm not sure what the use case is for a different font family, but if you do see one, then it would be useful to use a style property that is inherits the default style property unless set otherwise.