Remove containerless

[lukelarsen]

Problem

using the containerless option on components can cause problems in that the rendered html does not have the original tag of the component. Placing if.bind and other computations on that tag is then impossible. The layout components were using containerless for some css reasons.

Solution

Refactor a few things to remove containerless from all layout components.

Side Note

All components had their html reformatted to be cleaner. That is why so many lines were added.

[github-actions]

Coverage increased (+0.3%) to 69.056% when pulling ae73c16 on remove-containerless into 2c6508a on master.