[skyace65]

Does what the title says

• All screenshots have been updated and gone through Squoosh compression. The first screenshot now actually shows a scene from the third person shooter demo, I felt it makes Godot's 3D capabilities look better than the random 3 node scene we used before.
• I've added UI roles where I think they work
• Removed the reference to the asset library, the third person shooter demo has not been uploaded to the new asset store yet
• Class reference links have been simplified where applicable. I left a link to a specific method as is because I don't know if it will include the () unless we manually set the text.

EDIT:

• Re-worded the title of the section on Importing 3D models and removed the fixme note. While the docs could use better workflow information, that would be documented entirely within the importing 3D models pages, no in this intro section.

[Mickeon]

I left a link to a specific method as is because I don't know if it will include the () unless we manually set the text.

Indeed, we took the lazy way out and the () is written manually (or when generating the class reference). We really could use a custom role for these, dang it...

[skyace65]

Finally got around to updating this. I've updated screenshots in this PR so it now applies to 8.8, also moved toolbar descriptions to match their order in 4.8.

I've also gone with Calinou's wording suggestion regarding preview lights.