SystemUI: Extend swipe helper (Part1)

I was not happy with long press on notifications and recents
to open apps in floating mode. The long press duration kinda
breaks the UI interaction flow, which prevented me from
actually using floating windows. Therefore, I've created a
private modification, which enables floating mode for
notifications and recents by swiping to the left. This
greatly improves usability without strongly deviating from
stock UI experience, in strict accordance with PA's
philosophy.  Changes are surgically implemented to keep the
probability of merge conflicts rather low. The code was
successfully tested on mako, hammerhead, tilapia, and manta.
Let the team discuss and decide whether or not this is a
worthy extension to PA.

Changes are split into two commits.

- Extending SwipeHelper:
SwipeHelper can now distinguish between directions LEFT,
RIGHT, UP, DOWN and can fire an abstract trigger 'event'. A
trigger direction can be specified and when a swipe in this
direction occurs dismissable children will not be dismissed,
instead they will be snapped back.  Whenever a child is
swiped far or fast enough in that direction an event is
triggered and the onChildTriggerd() callback is issued. This
callback was added to the SwipeHelper.Callback interface and
therefore requires all its implementations to realize this
method, such as probably Hover, which is sadly not open
source (yet?).

Change-Id: Ida06195913f022463d29ca22092e81fb8993ad50
SystemUI: Swipe to float for notifications and recents (Part2)

I was not happy with long press on notifications and recents
to open apps in floating mode. The long press duration kinda
breaks the UI interaction flow, which prevented me from
actually using floating windows. Therefore, I've created a
private modification, which enables floating mode for
notifications and recents by swiping to the left. This
greatly improves usability without strongly deviating from
stock UI experience, in strict accordance with PA's
philosophy. Changes are surgically implemented to keep the
probability of merge conflicts rather low. The code was
successfully tested on mako, hammerhead, tilapia, and manta.
Let the team discuss and decide whether or not this is a
worthy extension to PA.

Changes are split into two commits.

- Swipe recents for floating window:
Recents ScrollViews set separate trigger directions on
SwipeHelper (LEFT for vertical and DOWN for horizontal).
Directions are chosen as the opposite of the 'natural'
swipe-to-dismiss direction performed by the clear-all
button. onChildTriggered() will open the app in floating
window mode. To confirm this behavior for horizontal and
vertical recents views, separate settings confirmation
dialogs are shown with appropriate PA-style graphics (Gimp
sources on request).

- Swipe status bar notification for floating window:
Analogous to recents, here the NotificationRowLayout sets
the trigger direction to LEFT. It also got its own
confirmation dialog together with new hint graphics. After a
child is triggered, the app is started in floating window
mode by performing a click causing the notification to
disappear (exactly as it would anyway, if the app would have
been opened in 'normal' full-screen mode).

Change-Id: Ib32e2c88033b1c143bd8dc8fa7394b002060d526

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values-de/pa_strings.xml
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
Add on-the-spot user preference dialog

Credit: PA
Fix setting confirmation helper derp
Revert "Remove mCustomBackground"

This reverts commit b1561553b1b291e9690b91b53bdab35b6b97b5fc.
[1/2] Base: DownloadManager: add support pause/resume/stop notifications

Add pause, resume and stop functions to make user can pause, resume and stop downloads by manual in downloads application.

Change-Id: I82ffff5a539448faab8933e2b47591199bf24cb9

Conflicts:
	core/java/android/provider/Downloads.java
aapt: i hate if (true) statements

Change-Id: If0d39f4d942067ae2d4ee4d32490b6e079a5f60d
fw: media: Handle NPE due to threading race

Change-Id: I6eab5bc3d687edfa6f0839e439b3314bed4fdcea
Temporarily hide lock screen unlock targets if opening a widget

If the user selects a widget to open, it's very unlikely that they would
want to use any of the slider shortcuts at that moment. Make it easier
to unlock the screen and open the desired widget by temporarily hiding
other targets.

Change-Id: I51d879cc77826e4f7235c5d35b6352e5e83bb7cf
Remove duplicate pause download constant
Revert "Temporarily hide lock screen unlock targets if opening a widget"

This reverts commit b59bb9067cbb3e4a4b8ef9a7c1d9853590d6a067.
Merge pull request #1 from LiquidSmooth/kitkat2

1