New wooden walls, dark tile colors and warning lines, knotted wire changes.

Like the title says. Pics of the new walls, floors and slightly changed knotted wires in a moment.

Also adds myself to the changelog, I've been around for about 3 years.
Merge pull request #5015 from WJohn/wiresandnewtiles

New wooden walls, dark tile colors and warning lines, knotted wire change.