Temporarily disable sourcemaps
Temporarily disable sourcemaps

- Sourcemaps are adding ~.4mb to the release zip, which is not cool
- Long term, we need to swap this out for a system that will let us do sourcemaps in dev, and
generate a separate non-minified css file without the sourcemap when doing a release
- Short term, I'm disabling sourcemaps & they'll need to be enabled when needed

airycanon/Ghost-Admin,kevinansfield/Ghost-Admin,airycanon/Ghost-Admin,JohnONolan/Ghost-Admin,dbalders/Ghost-Admin,kevinansfield/Ghost-Admin,dbalders/Ghost-Admin,acburdine/Ghost-Admin,TryGhost/Ghost-Admin,TryGhost/Ghost-Admin,acburdine/Ghost-Admin,JohnONolan/Ghost-Admin