kcms/lookandfeel: Make it super duper obvious what layout replacement does
requested to merge ngraham/plasma-workspace:make-it-really-obvious-that-this-is-dangerous into master
This action will destroy all your shell customizations and replace them with what's in the theme. The way we express this is a bit less clear than it needs to be IMO; I worry that we're not properly communicating the dangerousness of this option.
As such, re-word the warning text to make the dangerousness clear:
