Hardcode app bundle name here, too

Change-Id: I69cabd516e7c40b7ee75e311d725f6db78519855
Handle app bundles with space in name, also sign the mdimporter properly

Just like the Python framework, also the Spotlight importer needs to
be signed specially, it seems.

I wondoer if we could get rid of all the hair in this script by simply
just signing the app bundle, with the --deep option?

Change-Id: I722b4403e74560f6555a7528005ed7aa0c94352b