Revert "HALO:merging derp..."

This reverts commit 6d0d94946e2ec1e7b429600c82cbcc183abbf154.
Revert "Give floating flag to previous activities in the stack"

This reverts commit fcec5fd9444de0ff2369e32bb5c70ee2d740fce1.
Revert "Fix Halo not showed at first notifiction drop"

This reverts commit 3a72e531df4e973441a67b9102a3473d2cb0a744.
Revert "Halo:Option to pause the underlying app(1/2) merge conflicts: core/java/android/provider/Settings.java"

This reverts commit 39b7112bafa400ae5133cc47f0c3e505b650262f.
Revert "Don't bring home to the front if we're opening a floating activity"

This reverts commit 8be51ddcd2456a803da0f804ae1671e6fb5e8ddd.
Revert "HALO cleanup"

This reverts commit 59220966dc9a2a94381d355d21ad4f27c3481275.
Revert "Update drawables from PA"

This reverts commit ba14177a0b3da6d6436b5cac8b36f6ffbd0086d5.
Revert "Fix little derp causing visual bug"

This reverts commit 5db6b8bfd3d785ed6349a8a3053e9cd58fa99ddc.
Revert "LayerActivity: Corrected lifecycle"

This reverts commit bab0b12fabf2058bf5d2edb12e050f5e6738becd.
Revert "Reworked transparent layer"

This reverts commit b145705c6f8b061d4204f0d848f2096c3a42c5e6.
Revert "Halo: Add master switch to disable Halo (1/2)"

This reverts commit 81bde226723c4ebf0fd93ecf3bd5779becb51a1f.
Revert "Halo (1/2) Merge conflicts: core/java/android/provider/Settings.java packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java"

This reverts commit d8ab52614cd6261a719dfd1962f1f6289f108884.