Eleven: fix default image not showing up in queue fragment

SquareImageView and the LetterTileDrawable doesn't work well together
Since this image has fixed dimensions we don't need SquareImageView anyways

Change-Id: I8dcac7b3170af227f39d6d6333ff7d0497592bf9
Use L's new notification and media session API.

Change-Id: Ic9e7facdfa7213439b168a915ac9f2e8afc0a252
Eleven: Fix exception when leaving Eleven with nothing in the queue

It is possible for things to post to a handler even after the service has been destroyed
Fix is to shutdown the handlerthread in the onDestroy
Also set the subtitle text to alpha of 0 to not show on first launch

Change-Id: I76b5f4c4bc8a114660ced042ab02089bf279accb
Eleven: Make the Equalizer button a bit smarter

First check if the intent can resolve properly
Secondly start for result to make some MusicFX apps work

Change-Id: Id9b597d0a3881ad7a433a0d39383dddc94b9e3fc