Revert "Revert "Get theme info for current user instead of user 0""

This reverts commit a8dd3db88479fd9d5f9eb44765d15d3843dde9c6.
Revert "Revert "ThemeUtils: Retain the original package name in themed UI context""

This reverts commit 542d71180bde431798c37a7fadca0ca79c365f17.