Feature : Volume adjust sound preference 1/2

This patch allows the users to choose if they want the audible tone when adjusting the volume

The new preference is in
Settings | Sound
    Volume adjust sound
        Play sound when adjusting volume with hard keys
The Checkbox is defaulted to ON (1 in defaults.xml)

Look for 2/2 for the Settings, Sound Panel Change

Change-Id: I705c23065706317760ba60efc1a71f3ba6082bbd
LockscreenTargets : Dismiss on target select

Dismiss the lockscreen on target select, rather than when the application
is fully loaded. This gets rid of th perceived lag that a lot of users experience.
This is how we had it in previous versions of cm as well.

Change-Id: I4f125ad5a13a95b6eb72734a0fbdc44505d665ff
Make sure we're using an up-to-date disable state when we're reloaded.

Change-Id: Ibf1ac67d92ba98294366d70cf4f9f8244677a7f4
Remove duplicate if statement

Change-Id: I7a9605815186d1dda79085bffa4250ee7497a5ed
Bugfix : Quick pulldown sometimes flips when it should not

When your Quick Settings Panel is set to

Quick pulldown : right

Sometimes (very intermittently) the tray flips (to Quick Settings) as you pull it down from the right side.

This is happening because the pull down happened so fast you can see the top 0-10 pixels of the tray,
and because it was showing the notifications, not the Quick Settiings

However the user expects the tray not to flip, but to just be on the Quck Settings.

The new code simply checks to see that the Event was a pull down event and that the event started in the top status bar.
If this is the case, then the quick panel is swapped to (without flip)

Special Thanks to my daughter Jenny fo painstakingly reproducing this bug.

Change-Id: I8fdbedb1aa6d4fd672bd4cb58b7c99557469ab62
SystemUI: Avoid "phantom" status bar collapsing

There is one specific case where the status bar may collapse
for no aparent reason: When the last notification is removed.

If Quick Settings panel is showing while such a notification
is removed, the status bar WILL collapse -- and the user may
be left wondering why, because the notification that was just
removed isn't visible in that case.

A way to reproduce this behaviour follows:
  1) Settings -> System -> Quick Settings Panel -> uncheck
     "Auto close panel"
  2) Dismiss all notifications, even the sticky ones.
  3) Open the Quick Settings Panel and tap the apropriate
     tile to light the Torch
  4) Tap the tile again, to extinguish the Torch.

As you can see, the Quick Settings Panel collapses. This
happens because Torch puts up a notification, when lit and
removes it, just after it's turned off.

This will happen to whatever notification that hides itself,
e.g. a GMail notification, which vanishes when you read the
e-mail on another device. This too will trigger this issue.

-----

This patch prevents the bar from collapsing, as consequence
of removing the last notification, when Quick Settings is
showing.

Change-Id: I8c7c015c836810a465268b25b90c9166c4485a9f