Revert "PackageManager: Prevent themes from going into ASEC containers"

This reverts commit 8e2e8d97e3d0cefb1367dd8e447521f711c6f2c3.
Revert "Trying to make it work"

This reverts commit ff438045e6d06bf498fc54a6127b0f727931c0ed.
Revert "Revert "AssetManager cookies should be int32_t and not void*.""

This reverts commit d6c810f3d8d9f738f932801e37bc8096152f3c08.
Revert "Squashed commit of the theme engine support."

This reverts commit 5c41755a96fea0033576fa73a4f7ff1b4c10afcc.