Revert "Halo and MultiWindow Tweaks"

This reverts commit 84aede2c6b802c637e572b18e592520bb652eced.
Revert "Revert "Base: fix MultiSelectListPreference NPE""

This reverts commit cbfb174fe425802d55f3822c4b5af52b3c6d66d7.
Revert "Fix Floating Window"

This reverts commit 3304a0661c957a15cd87f56f52511ae69dfc9174.
Revert "Base: App Circle sidebar (add support Samsung multiwindow flags)"

This reverts commit cfd56dbaec2b17d1c4fccbed5e075f7c3f156516.
Revert "Base: App Circle sidebar (add support floating window)"

This reverts commit d51782dd8040da773e7f71ece1cd0c03f0f22ae9.
Revert "[1/2] Base: implement App circle sidebar"

This reverts commit 8fb2e7c76930fb5aee8a6ed96558f055f3c1dcbf.

Conflicts:
	core/java/android/provider/Settings.java
Revert "Base: Floating window with multitasking"

This reverts commit 2d8839d60d2217eac863f6ec0045f644199ae536.

Conflicts:
	core/java/android/content/Intent.java
Revert "Revert "Halo and MultiWindow Tweaks""

This reverts commit 24e31417e137668a07f3e3cd2709ecb2b608eefd.
Revert "Revert "[1/2] Base: implement App circle sidebar""

This reverts commit 36bcec9cfb11632a827382349e4383a0c72dedb5.
Revert "Revert "Fix AppCircleSidebar""

This reverts commit e8a8eff4f708090a3bbaffce2d56cdbf7d59366a.