Readme: Refactor layout sections [ci skip]
Readme: Refactor layout sections [ci skip]

Refs #271 #273

thredded/thredded,jayroh/thredded,thredded/thredded,jayroh/thredded,jvoss/thredded,jvoss/thredded,jvoss/thredded,jayroh/thredded,thredded/thredded,thredded/thredded,jvoss/thredded,jayroh/thredded