Frameworks: Fix memory leak + cleanup

Do not create new Objects onDraw + cleanup

Change-Id: Id1dc9ae85ccf820f2047528e12c4ecdc525f12d2
Frameworks: Fix linked volume does not persist after reboot.

The controling boolean value must be set before updateStreamVolumeAlias
is called first time. Otherwise updateStreamVolumeAlias will assume
it is always false till user toggle it in settings again.

Change-Id: I53455249909fa6ad69fa0ea6930f9065e5a14fdf
Frameworks: fix possible NPE + and missing expandable panel

Steps to reproduce for NPE:
- go into volume style settings
- switch to disabled
- switch to expanded
- NPE and hotreboot

Fix:
Check if mStreamControls is initialized and if not lock it and do it.

Steps for expandable error:
- go into volume style settings
- switch to disable
- press one time the volume button
- change to expandable
- change the volume and press the expanded icon
- result is it does not expand and is empty due of the missing volume panels.

Fix:
- if it was changed from disabled to expanded be sure that the additional volume panels
are recreated.

PS:
- fix another exception

Change-Id: I58d63d34f831b6a6f60f6eddb3a07fc916d464f3