Improvements to click packaging

The user's home directory should be specified as @{HOME} in the apparmor
profile, otherwise you'll get all manner of odd errors about parsing the
manifest file.  Which is of course a different file.  This is so obvious
that there's no need for it to be documented anywhere.

I don't think the icon is working yet, but that's okay since the icon is
ugly.
Two string improvements
Move to OptionSelector instead of ValueSelectors in book settings

It doesn't look like the SDK people want my modified version, so I'll
just ship it as part of this.  This is obviously better than letting me
modify the internals of a widget.