Make WixBA Model.Version setter private based on code review feeback.
Be consistent in use of double quotes in WiX setup code.
Set the TouchFile attributes consistently in the UtilCompiler.
Only the lux.xsd Component is referenced so place the Id there.

The lux.xsd Component is referenced from the ComponentGroup because it
installs into a different folder. The previous commit placed the Id on
the File element incorrectly believing the file was referenced
elsewhere. Place the Id on the lux.xsd Component is more correct.
Merge pull request #23 from robmen/pr-cleanup

Integrate pull request feedback.