Revert "Floating window: Enable transparent layer"

This reverts commit efa4dbcf22d754f6e45b1b9493289cfcbb46e49b.
Revert "Revert "HALO: make windows moveable and scaleable [WIP]""

This reverts commit e2f5ec3fc310f8757642b276a28a5b532a71215c.
Base: Floating window with multitasking

basic floating window are taken from AOSPA (HALO) by @D4rKn3sSyS

Drawables courtesy of @Alex Cruz thanks to him :)

with heavy change to get this work for multitasking

this feature, has ability to:
1. Moveable window to various position
2. Scaling window with 2 finger like zoom in/out
3. Double tap in actionbar or above window to fullscreen or back to floating window
4. Automatically resize when Snapping into one of side (Top, Bottom, Left, Right)
   (taken from xhalofloatingwindow by @zst123)
5. Automatically switch focus from other app (taken from multiwindow by @xplodwild)
6. Unlimited floating window app (depends on RAM)

this is still under testing, to make fully works
so if there any bug because of this, DO NOT REPORT INTO OMNIROM JIRA

to make app launch using Floating window feature

you must add Intent.FLAG_FLOATING_WINDOW
before start an activity

for example you can look at https://gerrit.omnirom.org/6515

need https://gerrit.omnirom.org/#/c/6561

PS.17 : fix scaling

Change-Id: Iad00c239de7d66e8bb45205ce626d4f08417b7cd

Conflicts:
	core/java/android/app/Activity.java
	core/java/android/app/ActivityThread.java
	core/java/android/content/Intent.java
	core/java/android/view/IWindowManager.aidl
	core/res/res/values/custom_strings.xml
	core/res/res/values/custom_symbols.xml
	services/java/com/android/server/am/ActivityRecord.java
	services/java/com/android/server/am/ActivityStack.java
	services/java/com/android/server/wm/WindowManagerService.java
fix styles

Change-Id: Iba1474de4a3b2c7430ca8eb7f5c9b12a0454211a
Pass the Floating all around....

AOSPA's old floating from notification popup menu && classic recent popup
Also adapted for Slim Recents

Change-Id: Ief2928e3bc35ed280f7e2e03ddbf615c5d57cd0e

Conflicts:
	packages/SystemUI/res/menu/notification_popup_menu.xml
	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java
Floating window: Enable transparent layer

Halo: Re-enable transparent layer

Change-Id: I3af24ed40314ca5edb1e5157c0ad9df8ac89c99f

App sidebar: enable transparent layer for floating apps

+ cleanup

Change-Id: I6ae8209f7d7839c78840e69bc9597d43fbedc790

enable transparent layer on notification long click

Change-Id: I058a19776bd90d964b5d5df4fcf251c784b3ba8c

Conflicts:
	core/java/android/app/Activity.java