Code review comment for lp:~mzanetti/unity8/fix-lockscreen-wallpaper

> - I might like a comment above the 0.4 alpha rectangle in Lockscreen to the
> effect of "This is only here to match the alpha of the main wallpaper for the
> greeter" -- makes a person wonder why its there otherwise

Done

>
> - We don't want to drop support for gsettings. That fallback is used so that
> image customizers can set a different default wallpaper. (They can easily
> change gsettings defaults, but not AS ones)

Reverted back

> - I don't see design sign-off for this. I asked Olga about this in person in
> London and she preferred them to be separate backgrounds.

There has been, I asked Olga to leave a comment somewhere to make it more obvious