Revert "CM11 Themes: Clear wallpaper mixnmatch entry on external change"

This reverts commit a0196b0e98626e87c11c4cd9ae427f5a1d9843cc.
Revert "CM11 Themes: load wp from apk if uri is null"

This reverts commit 3e563e6db63b1c17a9c88b38322f24cc6369041d.
Revert "Notify callbacks on "any" wallpaper change"

This reverts commit c3f6ebaf912adce4a884566a3c0c630462dae3cb.
Revert "Revert "CM11 Themes: load wp from apk if uri is null""

This reverts commit 3b4d51a95fc213b21b0a32ba3f5f573b1d0acaec.